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GCX Graphics ClientX User`s Manual

1. Crystal Device Typ Units x1 Ethernet 25 000 MHz X2 ADSmartlO microcontroller 3 6864 MHz X3 XScale core 3 6864 MHz X4 XScale real time clock RTC 32 768 kHz X5 CAN controller 16 000 MHz X6 Battery backed RTC 32 768 kHz X7 UCB1400 codec 24 576 MHz ADS document 110116 10012 Applieddata net Embedded Computer Systems Syste m Specificatio ns 6 4 16 6 4 17 PCMCIA The PCMCIA port on the GCX is managed by the system controller 6 4 8 with firmware developed by ADS The signals run through buffers before going to the PCMCIA J11 header Absolute Maximum Ratings Input voltage port I O pINS coooocccconocccnconooncnnonannnnnos 6 5 V Symbol Parameter Min Typ Max Units Vidax PCMCIA buffer power 3 3 V Vcccard PCMCIA supply voltage note 28 3 3 5 0 5 0 V 13 3V 3 3 V socket power 2 W I 5V 5 V socket power 2 WwW y Card detect 1 8 2 and voltage Rp pcmcia sense VS1 amp 2 pull ups note 29 100 Vp pemcia Card detect and voltage sense pull 33 yV up voltage Digital Outputs Vol 0 2 V Voh 3 1 V Digital Inputs Vil Vddx 3 3 V 0 8 V Vih Vddx 3 3 V 2 0 5 5 V Notes 28 The PCMCIA port supply voltage is selected programmatically 29 Each card inserted in a PCMCIA slot can drain up to 0 4 mW when the system is in Sleep mode 4 Vddx Rpcmcia IFC Bus Master The I2C bus on the GCX is driven by the PXA255 and is configured as
2. SPI 3 J6 PS 2 5 keyboard ji 2 USB Function 120 Ethernet us Ethernet Digital I O Audio y NSSP 12C SSP USB AC97 Speaker kemp outputs 8 jy stereo UCB1400 E Microphone RTC A RSS input gt z gt L NSSP D gt 4 Sa B1 ADS7845 6 H RG UU y Y y y4 m J13 IF J14 Touch panel Backlight LCD J12 LCD control 2x17 Hirose Figure 1 GCX Functional Block Diagram ADS document 110116 10012 Page 3 Applieddata net GCX User s Manual Embedded Computer Systems This page intentionally blank Page 4 ADS document 110116 10012 Applieddata net Embedded Computer Systems 2 Getting Started 2 1 Development Systems GCX boards are shipped as development systems designed to get the developer up and running guickly To use the system simply plug power supply into the mini DIN 8 receptacle on the system If the screen does not display anything after five to ten seconds check the Freguently Asked Ouestions below Most operating systems cold boot within twenty seconds 2 1 1 System Components A typical development system is shown at right system at right illustrates a BitsyX development system It consists of the following components e GCX single board computer e Flat panel display and cable Backlight inverter and cable e Touch screen and cable e _ 120 240 VAC power adapter e Plexiglas mounting e Developer s Cable Kit including e Serial Port DB9 adapter ADS cable
3. Jumper setting Function RTC powered externally J21 none or by onboard battery Connects Vddx 3 3 V to ee RTC backup power input ADS document ff 110116 10012 Applieddata net Embedded Computer Systems Hardware Refe rence 3 4 Signal Headers The following tables describe the electrical signals available on the connectors of the GCX Each section provides relevant details about the connector including part numbers mating connectors signal descriptions and references to related chapters The location indicated for each item refers to the grid diagram of the GCX in section 3 1 1 For details about how to determine pin numbers of a header see section 3 1 For precision measurements of the location of the connectors on the GCX refer to section 6 1 1 Legend n c Not connected GND GCX ground plane 3 4 Reference section for signals Signal Types I signal is an input to the system O signal is an output from the system IO signal may be input or output P power and ground A analog signal OCI open collector open drain input OC open collector open drain output 3 4 1 J1 Contact Closure Detect Board connector 2 pin header 0 100 in spacing Molex 22 23 2021 Location on board D6 External input Short these pins together to generate an interrupt on the CPU Most ADS operating system ports use this On Off Request input to wake the system and to put it to sleep Pin Name Type Description
4. SPK_R Line_out_L x SPK Line_out_L SPKL Vref_drv x Vref_drv SPK Vref Vref Line_in_L Line_in_L Line_in_R Line_in_R UCB1400 UCB1400 Figure 10 GCX with Mono Speaker Amp left and Stereo Headphone Option right Absolute Maximum Ratings NAB SE HY a aloes ARY YN 3 3 Vdc Symbol Parameter Min Typ Max Units DVdd digital supply voltage 3 3 V Avdd analog supply voltage 3 3 V fs codec sampling rate note 26 8 48 kHz Audio Input Gain_mic pre amp gain note 27 0 42 5 dB Rin_mic input impedance 10 kQ Cin_mic DC blocking capacitor 1 uF Vmicpwr microphone power 3 3 V Rmicpwr microphone power series resistance 6 9 kQ Audio Output Mono Amplifier Avdd analog supply voltage 3 3 V RI speaker load 8 Q Po Output power THD 1 f 1kHz 250 mW Av Amplifier gain 1 V V Vpp Output voltage swing 2 3 Vpp Differential output voltage amplifier vod enabled Rl 8Q a Be my Total harmonic distortion plus noise TEREN Rl 8Q Po 250mW f 20Hz 4kHz 2S aB ADS document 110116 10012 Applieddata net Embedded Computer Systems System Specifications Symbol Parameter Min Typ Max Units Audio Output Stereo Headphones factory option RI speaker load 16 32 o Po Output power RI 32Q 25 mW Cl Load capacitance 30 pF Ratio of total harmonic distortion plus WAW noise to signal F 48kHz AI 320 1 gB Notes 26 The UCB14
5. Applieddata net Embedded Computer Systems GCX Graphics ClientX User s Manual Applied Data Systems www applieddata net 10260 Old Columbia Road Columbia MD 21046 USA 301 490 4007 O 2005 ADS ADS document 110116 10012 preliminary Applieddata net Embedded Computer Systems About the Cover Image The cover image shows a fully populated Rev B GCX with PCMCIA ejector RTC battery and IrDA transceiver installed The boot ROM socket shown in the diagram is a factory option Printing this Manual This manual has been designed for printing on both sides of an 8 5x11 inch paper but can be GCX User s Manual printed single sided as well It has also been optimized for use in electronic form with active cross reference links for quick access to information Revision History The following list summarizes the changes that have been made between released revisions of the manual REV DESCRIPTION BY 1 Preliminary release 1 14 05 ak Second preliminary release major revision 8 17 05 ak ADS document ff 110116 10012 Page i Applieddata net Embedded Computer Systems GCX User s Manual Table of Contents About the Cover Image sosisini ide dci isis 1 Printing this Manuals a GG A GG a EEE i Revision History eee ea lows cas Yu DWY E GYFF cen eine Y YIT teen ene bet Y y Gyda i Table of Contents uii GW ud Rd OG Ddyn satel anes CDG FC UDD GROC TYR FD THL ONN TA iii 1 Introduc
6. SW7 SW8 SW9 COL 0 po po e O O J COL 1 COL 2 Figure 3 Using a 3x3 Keypad with ADSmartIO ADS document 110116 10012 Page 31 Applieddata net GCX User s Manual Embedded Computer Systems 4 3 6 Page 32 ADSmartlO Signal Cross Reference The ADSmartlO microcontroller serves many functions in the GCX The following table illustrates how the microcontroller ports are utilized for ADSmartlO functionality on the GCX Entries in parentheses indicate indirect connections to the listed pin e g through voltage dividers or additional circuits Signals with conventional protection circuits are considered directly connected I input O output Port Type Function PAO J7 17 IO PAI J7 19 IO PA2 J7 21 IO a a Keypad columns digital I O or A D PAS SLDS IO PA6 J7 29 IO PA7 J7 31 IO PBO PBI unused PB2 J2 16 IO SMTIO2 digital I O PB3 J2 18 IO SMTIO3 digital I O PB4 FRM PB5 RX MOSI SPI communication PB6 TX MISO with PXA255 PB7 SCLK PCO J7 15 IO PCI J7 13 IO PC2 J7 11 IO ne yee a Keypad rows or digital I O PCS J7 5 IO PC6 J7 3 IO PC7 J7 1 IO PDO J2 20 IO SMTIO4 digital I O PDI J2 22 IO SMTIOS digital I O PD2 J6 5 IO PS 2 Clock PD3 IROSSP PD4 PD5 k unused PD6 J6 1 IO PS 2 Data PD7 unused ADS document 11011
7. 1 RgOnOff OCI CPU wakeup 2 GND P ground 3 4 2 J2 I O Analog Inputs USB Function Port NSSP I C Board Connector 2x15 header 2 mm spacing Samtec STMM 115 02 G D Recommended Mating Cable Samtec TCSD Series Recommended Board to Board Connector Samtec ESOT series e g ESOT 115 02 F D 500 Location on board A1 B1 Pin Name Pin Type Description 1 UCB_IOO IO 3 UCB_IOI IO 5 UCB_IO2 IO 7 UCB_IO3 IO 9 UCB_IO4 IO UCB1400 Digital I Os UCB_IO9 2 IO 4 6 1 6 4 5 UCB_IOS 4 IO UCB_IO7 6 IO UCB_IO6 8 IO UCB_IOS 10 10 ADS document ff 110116 10012 Page 17 GOX User s Manual 3 4 3 Page 18 Applieddata net Embedded Computer Systems kiin Name Pin Type Description 11 ANINO AI 13 ANINI AI 15 ANIN2 Ar UCB1400 Analog Inputs 4 6 2 17 ANIN3 AI I2C_SCK 12 IO A I2C_SDA 4 IO FC 4 5 7 SMTIO2 16 IO PB2 SMTIO3 18 IO PB3 SMTIO4 20 IO PDO ADSmartlO 4 3 6 SMTIOS 22 10 PD EXT_IRO 24 I External Interrupt 19 NSSP RXD I 21 NSSP TXD O 23 NSSP SERM O PXA255 NSSP Port 4 5 3 25 NSSP SCLK O USB_VCC 26 PI 27 USB_GND P USB_UDC 28 10 USB Function Port 4 5 3 USB_UDC 30 10 2 GND P ground J4 Touch Panel Board Connector 1x4 header 0 100 inch spacing Molex 22 23 2041 Board Connector 1x5 header 0 100 inch spacing Molex 22 23 2051 factory option Location on board D6 J4 con
8. lt co Fi o Dn o 00 0 O mal co O Fm Fo c cu oo o cu om o NONN gt o wm N oc co r r o N Qu y o erro m sows w o un un wo 200 157 262 ADS document 110116 10012 Page 47 Applieddata net GCX User s Manual Embedded Computer Systems 6 1 2 6 2 Page 48 Mounting Holes Four holes are provided one on each corner for mounting The diameter of the holes is 0 138 in Mounting holes are plated through and connected to the GCX ground plane For reliable ground connections use locking washers star or split when securing a GCX in an enclosure Make sure that washers do not extend beyond the limits of the pads provided Clearances The GCX has a low profile It can fit in an enclosure with inside dimensions as thin as 0 936 inch 23 8 mm Key clearances are as follows e Highest component 0 512 inch 13 0 mm top 0 262 inch 6 7 mm bottom e Board thickness 0 062 inch 1 6 mm e Clearance over top and bottom 0 05 inch 1 3 mm each Note Selection of connectors and wiring harnesses will determine height of final assembly Volume Production Options The GCX has a number of production options detailed throughout this manual This section describes options that most significantly affect the mechanical design of the board These options are generally available only for volume production orders Non recurring configuration charges may apply Install PCMCIA Ejector Systems can be shipped with a PCMCIA ejec
9. 4 8 2 R pnl_scan Pull up resistance 4 7 kQ V pnl_scan Pull up voltage 0 Pnl_pwr Pnl_pwr V Contrast Control passive displays 3 2 5 3 3 14 4 8 2 note 14 Vee Ri 5k0Q J19 1 2 note 13 30 15 V Vee Ri 5kQ J19 2 3 note 13 15 30 V Vcon Low voltage contrast adjust note 14 0 1 4 V Brightness Control backlight 4 8 2 Vbacklight Backlight and Vee supply note 13 5 12 18 V R backlightOn Pull up 10 kQ With pull up note 15 12 V V backlightOn No pull up note 16 30 V V backlightPWM PWM note 17 0 5 V R backlightPWM PWM series resistance note 18 2 2 kQ Notes 10 Jumper JP1 3 3 1 selects the display voltage 11 12 Page 52 Total power available depends on system power budget Systems are configured at the factory with buffers for 3 3 or 5 V panel data Jumper JP3 3 3 6 selects the voltage for those buffers 5 V displays with Vih lt 0 6 Vpnl_pwr 3 0 V will work reliably with 3 3 V data 3 3 V buffers can be run at 5 V for test purposes but if your application requires 5 V data contact ADS Sales to ensure the correct buffers are used for your display The onboard Vee power supply is powered by Vbacklight Vee specifications shown are for Vbacklight at 5 V The Vee power supply can generate more power when Vbacklight is a higher voltage Vcon is the filtered low voltage PWM signal used to control Vee It can be used directly with some passive displays to control contrast Vcon and Vee are control
10. Burst mode in this context is a registered trademark of Linear Technology Corporation ADS document 110116 10012 Page 45 Applieddata net G CX Use rs Man u al Embedded Computer Systems 5 3 Designing for Optimal Power Management Designing a system for optimal power management reguires careful attention to many details This section provides some guidelines and tips for best power management 5 3 1 Create a Power Budget for Peripherals Embedded system designers using the GCX should have a clear understanding of how power usage will be allocated in the system they design Designers should create a power budget that takes into account the types of devices that are expected to be used with the GCX The following lists detail some of the typical external loads that can be placed the GCX power supplies Baseline power consumption of the GCX is listed in section 6 4 2 3 3 V Loads Typical external loads on the 3 3 V power supply include the following e Display e Some PCMCIA cards 5 V Loads 5 V loads come from both onboard and external devices Typical loads include the following External e Display e Most PCMCIA cards e PS 2 keyboard e Speaker s Assume 80 efficiency Onboard e 3 3 V Supply Multiply by 115 to account for 3 3 V power supply efficiency 5 3 2 Power Loads During Sleep When designing systems for minimal power consumption during Sleep mode make sure to consider DC losses to external connections The fol
11. POW Du nota ita ies 45 52 5 Power Supply EMCiency ua 45 5 3 Designing for Optimal Power Management oooccnnoccnonccnonncnnnncnnnncnnnncnnnncnnnccnoncnnnnccnnnccnnnccnnne 46 5 3 1 Create a Power Budget for PeripheralS oononnnnnnnnninnnonnnoninoncnnncnnncnnnonnccnncnn nono ncnnccnoo 46 3 3 V Loads 5 V Loads 5 3 2 Power Loads During Sleep eiii deir Fu YNTE YDD ireland 46 6 System Specifications ie Ee en Re ii 47 6 1 Mechanical Specifications sesno e E AE a EE AR E A Rai 47 6 l l Mechanical Drawing otitis 47 6 2 Mounting Hole As 48 O l23 O A a Y Ge at 48 6 2 Volume Production OPONSE EE EE V E ER AE E Si 48 Install PEMCIA Fjecton ceu Mw un YG NG YY hs en 48 Boot ROM sich A AM DF aea 48 Five Wire Touch Panel Controller eee eesccessccessceeeeceessceesaceesaceeeaceesaeeesaceesacessaeeesaeeesaeees 48 Display Supportu ee et id it e tad RS 48 Remove 3 3V Regulat0p o O e ee As brea 49 serial 1 J1708 083 3 Y Logic Level isie at 49 Mating Headers on Underside of Board oooonncnnncnoccconononononcnnnconononocononnonn nono conca n non nono ncnnccinoo 49 Connector Platmp iii ii ai Ty A 49 6 3 Environmental Specifications 00 ec eeceesceceseeeeseeceseeeesceceseecesceceaceceseecsseecsaeeseeeeseeeeeeesee 49 6 4 Electrical Specifications iii GG iii 50 6 41 Power Supply ise a iu Aah a ees 50 6 4 2 gt Power Consumption ee und eaves ser GY aes iss eet es dd Fn UD CG eerie 50 6 4 3 Sleep and Wakeup vivotcoicnnoncin tenias Gn GR Hd
12. Page 21 GOX User s Manual 3 4 9 3 4 10 Page 22 J10 Serial 3 Applieddata net Embedded Computer Systems Board Connector 2x5 header 0 100 in spacing Amp 103308 1 Location on board C1 Pin Name Type Description 1 DCD3 I Data Carrier Detect 2 DSR3 I Data Set Ready 3 RXD3 I Receive data 4 RTS3 O Ready To Send or RTR Ready to Receive 5 TXD3 O Transmit data 6 CTS3 I Clear To Send 7 DTR3 O Data Terminal Ready 8 RIB3 I Ring Indicator 9 GND_COM3 P Serial 3 ground 10 n c J11 PCMCIA Board connector AMP 535655 2 Optional ejector AMP 146019 1 secured with 2 56 screws and 0 187 inch standoffs Location on board A3 D5 The 68 pin PCMCIA socket conforms to the PCMCIA standard revision 2 1 for 5 V tolerant Type II cards The socket can also run at 3 3 V The socket is normally de energized the operating system is responsible for turning on the socket when a card is inserted and turning it off when the card is removed Vpp pins 18 and 52 which is 12 V in older PCMCIA implementations is left unconnected in this implementation Pin 69 pin 70 and the ejector are electrically connected to the same plane as the board mounting holes See section 6 2 for details about ejector hardware as a factory option See section 6 4 16 for electrical specifications ADS document 110116 10012 Applieddata net Embedded Computer Systems 3 4 11 J12 LCD D
13. 5 PXA255 GPIO Cross Reference ccccccccccccececesececececececececececeeeceeeeececeeeeeeeseseeeseseeess 28 42 Real Time Clock RTC ccccnnnncoconcnnncnnnnnonannnoncnonnnnnnnnnnnccnnnnnnonnnnnononnnnnnnnnnnncnonnnnnnnnnnnccinnnns 30 4 3 ADSMartlO dd dd dde SN 30 4 3 1 OV OT VI Wii dada 30 4 3 2 ADS Mart Features ii 30 4 3 3 Digital VOS iia iaa ddd ded oda rial 30 ADS document ff 110116 10012 Applieddata net Embedded Computer Systems GCX User s Manual 43 4 Analog Inputs AID tt tn 31 4 3 Keypad Scan elin uu ts A A yd 31 4 3 6 ADSmartIO Signal Cross Reference oooocnnncnnonnnonconnconononocononononnnonnconn conc nn ncnnncnnccnnooo 32 Are ZAUdiOn RAR 33 44 1 MicrophonelInput ceenie nie ynde WG Fn dT YE Gn FFF DG Fd Cys 33 4 4 2 Audio Outputs Speakers and HeadphonesS ooconnoninnnonnnonononononcnanonanonnnonncnnonnncnnccnnos 33 Connecting Speakers Connecting Headphones Factory Option 4 5 Data Communications ssie Hd a 34 O TN 34 XScale UART 4327 IDA A I A A A GT 34 4 5 3 Synchronous Serlal econo dT de GIGIO 35 Overview of Synchronous Serial Ports SSP on the GCX 4 54 US Bescests ceases ctedieed di YG cs 36 USB Function Port O 36 45 6 CAN Bin Ge NA optan 36 4 5 T i CFE Bus TW engte RH PN PN HNN NN FN DN 37 PC on the GCX PC Device Addresses Managing Independent PC Buses 4 0 Discrete Signals peline ian di DY GG RD GG a 38 46L Distal IO tios 38 4 0 2 Analog RN 39 4 6 3 Analog Outputs BWM va
14. 8 Isolating GCX from an Active C Bus When Powered Off This isolation is not needed if the IC subsystem turns off with the GCX or when the GCX is in sleep mode It is also possible to use a variation of this circuit to bridge I C buses of different voltages See the Philips IC standard for details Discrete Signals This section summarizes the discrete signals on the GCX that can be used for measurement or control Digital IOs The GCX has a number of subsystems that provide digital control lines for application use These are often referred to as digital I Os inputs outputs as most can be software configured as inputs or outputs The following table summarizes the digital I Os available on the GCX The Ref column indicates reference sections for their use Type lines Source Header Ref Details 3 3V logic I O 4 PXA255 J7 6 4 14 low current 3 3V logic I O 10 UCB 1400 J2 6 4 5 low current 4 J2 4 3 3 software configurable AR VO 16 APSANIO J7 6 4 7 pull ups available ADS document 110116 10012 Applieddata net Embedded Computer Systems Featu re Refe rence 4 6 2 Analog Inputs The GCX has two subsystems that perform analog to digital A D conversions These A D inputs are typically used for low speed uncalibrated applications e g user input ballpark voltage measurement etc as the noise margins on the GCX A Ds are not suited for most instrumentation applications For precision A D
15. AO Left channel ADS document 110116 10012 Appliedda Embedded Computer Systems ta net 4 Feature Reference 4 1 4 1 1 This chapter provides details about the architecture and many features of the GCX and how they can fit together to create a system that meets your application needs System Architecture Boot Code The GCX uses the first block of onboard flash to store the boot code At the factory boot code is loaded using the JTAG interface J9 Most ADS GCX boot loaders are field upgradeable using a PCMCIA flash card The GCX can be used in security conscious applications where a removable boot ROM is required The boot ROM resides in socket U22 location D1 D2 on the board See section 6 2 for details about this and other volume production options Synchronous DRAM One bank of synchronous DRAM SDRAM can be populated for a system total of 16 32 64 or 128 MiB of RAM The data bus width is 32 bit The memory clock speed is one half the CPU core clock speed Typical memory bus operation is at 99 5 MHz The self refreshed RAM consumes most of the system sleep current Sleep current increases in direct proportion to the amount of RAM installed Non Volatile Memory There are several ways to store data on the GCX that will survive a power failure Some devices can only be accessed through operating system drivers and not all are available for application data storage Flash Memory Flash memory is the pri
16. SCL Vv e 12 120 SCL SDA NN e 14 12C_SDA Voltage Control RIE Figure 7 The GCX IC BusThe XScale controls all PC peripherals on the GCX Its I C signals are routed to header J2 via low impedance resistors Specifications are listed in section 6 4 17 PC Device Addresses The following are the bus addresses of the C devices included on standard GCX systems 0x20 Voltage controller 0x68 Real time clock Select external C devices with addresses that will not conflict with the onboard devices Onboard devices are typically controlled by operating system drivers and should not be addressed directly ADS document 110116 10012 Page 37 Applieddata net GCX User s Manual Embedded Computer Systems 4 6 4 6 1 Page 38 Managing Independent PC Buses PC was designed for use in closely integrated systems However some embedded applications may require that components on the GCX or external I C bus be turned off to conserve power In such cases your system may need to use transistors to isolate the buses The following diagram illustrates how to isolate the GCX from an external I C bus when the GCX powered off external IC bus remains powered Choose the control signal and type and direction of transistor based on the reguirements of your application GCX 12C subsystem 1 j SCL 1 oo l SDA PowerOn or Vddx Depopulate GCX I2C pull up resistors Figure
17. Systems Featu re Refe rence enables the transceiver with the IrDAOn signal and sets up the PXA255 to shorten the Serial 2 data bit pulses to match the IrDA standard The IrDA transceiver is normally mounted on the board 3 2 4 but for volume production orders header J23 can replace the transceiver for cabling to another location Electrical specifications are listed in section 6 4 9 Synchronous Serial The GCX acts as master on a number of internal and external synchronous serial buses The following table describes how the buses are used on standard production GCX systems SSP Bus Use on GCX External device header J2 or five wire touch panel controller PXA255 SSP ADSmartIO controller PXA255 NSSP Overview of Synchronous Serial Ports Several synchronous serial port standards share the same simple architecture a clock line transmit and receive lines ground and one or more device selects Each device on the bus reguires its own select line Buses may be full or half duplex clocking data one or both directions at the same time respectively The standard selected defines which devices are bus masters and which are slaves To clarify direction of the data signals the SPI bus master transmit line STXD is also Known as MOSI Master Out Slave In while its receive line is known as MISO Master In Slave Out The Slave Select SS signal which enables the slave device s transmitter is also known as SFRM2
18. Touch Panel Gu Ou NI oes dyd CY steele ele ess Rake GYN A 18 344 JS Input Power Connectors ui ta neki he den ta iets TF YU eet 19 BAS Jo PS 2 Keyboard uu nn iid E Ye Yd Bend RT TYR ao 19 3 4 6 J7 ADSmartlO Serial 1 and 2 EIA 422 485 I O ooononnnninnnonncoconononancnnncnnncnnnonnnnns 20 FAT J8 Etherneti teina O OT 21 3 4 8 J9 Manufacturing and Test Connector eee eeceseeeseceeceseseeesseesseeeseenseenaeee 21 3 49 JIO Seal diia edil 22 3 4 10 MEL PCMCI A gine ud iadu ded dd NG WD Dd DW CUDD 22 34411 J12 LED Display HITOS ee ie YG E ES AN ERa aE SEa ysan 23 34 12 J13 BacKlight Inverter aos DU RW OU 24 34 13 14 LCD Display 345Din iei esac diante rta idad ESE EEEa Eaei id 24 3 4 14 JLT Microphone cosita iia 25 BAAS JAS CAN BUS aiii dic iii 25 3 4 16 J21 RTC Battery Connector factory Option ooooocccocnnonnonnnonnnononononanonanonnnonnconaconnn no 25 3 4 17 J23 Remote IrDA Connector optional ooococncccnococoncccnnanconcnconccconcncnnncnoncnonnccnonoss 26 34 18 J516 Audio Output sied eiu YI Y UG DAY HU 26 Speaker Ouput Stereo Headphones factory option Featire Refercnceu aaa 27 4 1 NA i in Y NWY FYD A YG WW FWA 21 4 1 1 Boot Code a a oo 27 4 1 2 Synchronous DRAM iiid dd Td ddydd Gudd iii ica 27 4 1 3 Non Volatil amp Memory eiseressen aa atan ias inesperada naa 27 Flash Memory ADSmartlO EEPROM CompactFlash and PCMCIA ATA Cards RTC NVRAM AACA Interrupts ee ud du Y y Yd Uu 0 E DR Y 28 4 1
19. at the pin is equal to voltage reference Vref e g V Vref reading 1023 Not all ports are available for external A D use see section 4 3 6 for port assignments The A D inputs on the GCX go through voltage dividers before reaching the pins See the electrical specifications listed in section 6 4 7 for details 4 3 5 Keypad Scan The ADSmartlO can scan a matrix keypad up to four by five keys in size Matrix keypads are simpler and cost less than full keyboards and can be easily customized for your application You can also create a keypad matrix from a collection of normally open switches When configured to scan a keypad the ADSmartlO configures the ROWn lines as inputs with software pull ups enabled and configures the COLn lines as outputs set to 1 high For the scan the keypad scanner sets successive COLn outputs to 0 low then looks for a 0 on one of the ROWn inputs The scanner re reads the pressed key after a delay to debounce the key press Unused row and column lines can be used for general purpose I O or A D The following diagram illustrates how to connect a 3x3 keypad matrix The pull ups are the software activated internal resistors of the ADSmartIO while the series resistors are part of the GCX GCX ADSmartlO Controller A 3 x 3 Keypad ROW 0 swi _ SW2 Sw3 A Lo io Lo ROW 1 O o sw4 SW5 SW6 A o o L o ROW 2 O gt O
20. readings consider taking averages of several readings performing two point calibrations or using an external A D converter e g over SSP The following table summarizes the A D inputs available on the GCX The Ref column indicates reference sections for their use Range lines Rin Source Header Ref Details 0 10 V 4 1 3kQ UCB 1400 J2 6 4 5 0 10 8 V up to 8 43 2 kQ ADSmartlO J7 pee PA channels 4 6 3 Analog Outputs PWM The GCX has two analog outputs These are pulse width modulated PWM low pass filtered digital I Os used to control LCD backlighting and contrast section 4 8 2 4 7 Touch Panel The standard GCX supports four wire analog resistive touch panels while five wire panels are an option for volume production orders Connect the touch panel to the inputs on connector J4 The touch panel controller can wake the system from sleep section 5 2 3 Electrical details are listed in section 6 4 5 ADS document 110116 10012 Page 39 Applieddata net GCX User s Manual Embedded Computer Systems 4 8 Display Controller The GCX uses XScale display controller to drive active and passive liquid crystal displays LCDs This section describes both the controller architecture display signals and backlight and contrast control 4 8 1 The XScale Display Controller The XScale controller uses system memory for the display frame buffer It can drive VGA 640x480 and SVGA 800x600 displays easily
21. select a variety of operational modes All use 2mm shorting blocks shunts to select settings Turn off power to the GCX before changing the position of a shunt The location indicated for each item refers to the grid diagram of the GCX in section 3 1 1 JP1 LCD Display Power Type 3 post header 2mm Location on board A6 This jumper selects the supply voltage for the LCD display The voltage selected here is passed to the PNL_PWR pins on J14 3 4 13 and J12 3 4 11 Jumper setting Voltage Selected 1 2 Vddx 3 3 V 2 3 Vcc 5 0 V WARNING Make sure you have selected the correct voltage before connecting the panel Flat panels can be irreparably damaged by incorrect voltages IMPORTANT This shunt is populated at the factory to match the voltage of the signal buffer circuits populated on the board While the buffers may perform adeguately at a different voltage than what was set at the factory ADS cannot guarantee long term performance ADS document 110116 10012 Page 11 GOX User s Manual 3 3 2 3 3 3 3 3 4 3 3 5 Page 12 JP2 LCD RL Signal Type 2 post header 2mm Location on board A6 Applieddata net Embedded Computer Systems This jumper determines the voltage for the PNL_RL signal on J14 and J12 On some active matrix LCD displays the PNL_RL signal flips the displayed image right to left Jumper setting Connects RL to 1 2 GND n c PNL_PWR JP3 LC
22. the PXA255 To create a USB connection you must wire a standard USB socket as described in the following sections For each type of connector pin numbering is as follows Pin USB signal 1 USB_PWR 2 USB 3 USB 4 GND USB Function Port The GCX includes a USB Function or Client port This interface allows the GCX to appear as a client device to USB Host devices such as desktop and laptop computers The USB Function signals are available on connector J2 section 3 4 2 Connect these signals to a USB client Type B socket mating face shown at left The USB standard also permits directly wiring the USB signals to the host or to a host connector e g USB mouse The PXA255 supports the full USB connection speed 12 Mbit s It indicates this to the host device with a 1 5 KQ pull up on the USB signal USB_VCC is power supplied from the host computer Since the GCX is self powered not powered by the USB host USB_VCC is not needed as a power input However USB_VCC tells the GCX when a USB cable is connected so include it when connecting the USB signals to the GCX The GCX includes the capability to simulate a Function port cable disconnection This feature can be used to force the host to re enumerate the GCX e g after wakeup 4 5 5 Ethernet The GCX includes a 10 100 BT Ethernet controller with an RJ 45 socket J8 Ethernet details and electrical specifications are listed in sectio
23. this feature Interrupts The GCX includes several sources for external interrupts The following table summarizes these sources and the devices to which they are connected Interrupt Signal Pin IRO Handler XScale GPIOs 7 J7 XScale CPU EXT IRO J2 24 Controller CPLD CARDAIRO J11 16 Controller CPLD Your operating system will determine which interrupt sources are supported PXA255 GPIO Cross Reference The following table describes how the GCX utilizes the XScale GPIO lines GPn They are offered for reference purposes only Most operating systems make this information transparent to developers GPIO Signal Name Type Function connector section 0 WAKE_UP I Debounced RgOnOff 3 4 1 6 4 3 1 IRO_CPLD I CPLD interrupt 2 CTS2 I Serial 2 CTS 4 5 1 3 USB_DET I USB function port detect connection 4 TS_IRO I Touch panel interrupt 5 USB_RECONN O USB function port disconnect reconnect 6 GPIO6 IO Digital IO J7 3 4 6 7 CARDAVSI I PCMCIA Voltage Sense 1 8 GPIOS IO Digital IO J7 3 4 6 9 GPIO9 IO Digital IO J7 3 4 6 10 CARDAVS2 I PCMCIA Voltage Sense 2 11 CLK3 68MHZ O CPLD clock 12 GPIO12 IO Digital IO J7 3 4 6 13 PANEL_ENABLE O LCD display power enable 14 IRO_UCB I UCB1400 interrupt 15 CS1 O Asynchronous flash chip select 16 PXA_VEE_PWM O PWMO control of Vee voltage 17 PXA_BL_PWM O PWM1 backlight brightne
24. 00 supports sample rates of 8 11 025 12 16 22 05 24 32 44 1 and 48kHz The codec can sample input and output streams at independent rates 27 The UCB1400 includes a programmable gain amplifier that can be set in increments of 1 5 dB ADS document 110116 10012 Page 57 GOX User s Manual Embedded Computer Systems 6 4 14 6 4 15 Page 58 PXA255 Processor The XScale PXA255 core can change system voltage Vddi 6 4 1 dynamically to achieve lower power consumption at high clock rates It uses voltage Vddx to power its interface I Os The digital I Os include series resistance and ESD protection Serial ports configured for 3 3 V logic operation run directly to the processor section 4 5 1 These lines should be treated as digital I Os and protected for over current and over voltage accordingly Absolute Maximum Ratings Input voltage digital I O piNS oooonnicinnnnnnncinncccnn 3 6 V Symbol Parameter Min Typ Max Units Digital Outputs Vol 0 V Voh 3 3 V lo 2 2 mA Digital Inputs Vil 0 2 Vadx Vih 0 8 Vadx NSSP Port Base bit rate internal clock 3 6864 MHz Divisor for Internal clock 1 4096 Clock rate external source 13 MHz Crystal Freguencies Agencies certifying the GCX for compliance for radio freguency emissions typically need to Know the freguencies of onboard oscillators The following table lists the freguencies of all crystals on the GCX
25. 13 O 72 LDD14 O 73 LDD15 O 74 VSYNC FCLK O LCD control signals 4 8 75 HSYNC LCLK O ADS document 110116 10012 Page 29 Applieddata net GCX User s Manual Embedded Computer Systems 4 2 4 3 4 3 1 4 3 2 4 3 3 Page 30 GPIO Signal Name Type Function connector section 76 PCLK O 77 LBIAS O 78 CS_CPLD O Controller CPLD chip select 79 n c O unused 80 CS_ETH O Ethernet chip select Real Time Clock RTC The GCX uses the DS1307 real time clock chip to maintain the system date and time when the system is powered down The operating system typically reads the RTC on boot and wakeup and sets the RTC when the system time or date is changed The system communicates with the RTC on the PC bus section 4 5 7 The RTC is powered by a long life 3 V battery For volume production orders the battery can be removed from the GCX and the RTC can be powered via the power input on J21 See section 6 4 1 for electrical specifications ADSmartlO ADSmartIO M is a RISC microcontroller on the GCX that is programmed with ADS firmware This device provides additional 1 O functionality for specialized tasks Your application software can configure the standard ADSmartlO for a variety of functions such as digital I O PWM A D PC keypad scan and PS 2 keyboard operation Overview The ADSmartlO controller has four eight pin I O ports named PA PB PC and PD Some of thes
26. 16 32 and 64 MiB of and asynchronous flash These memory options are available for volume production orders ADS document 110116 10012 Page 1 Applieddata net GCX User s Manual Embedded Computer Systems 1 25 User Interface and Display e PXA255 display controller e Logic level digital flat panel interface e Backlight intensity and on off control signals e _ Software controlled VEE generator for passive LCD contrast control factory option e Four wire analog resistive touch panel interface five wire for volume production orders e PS 2 keyboard port 1 2 6 Discrete I O e 20 ADSmartlO ports configurable for digital I O and or up to 8x8 matrix keypad e 14 additional general purpose digital I Os e Three A D inputs 1 2 7 Audio Interface e Twenty bit AC 97 Codec e Microphone input e 700mW speaker output or stereo headphone output factory option Page 2 ADS document ff 110116 10012 Applieddata net Embedded Computer Systems Introduction 1 3 Block Diagram The following diagram illustrates the system organization of the GCX Arrows indicate direction of control and not necessarily signal flow GCX SDRAM and Boot Flash Memory ROM 7 Serial 3 2 o 8 J11 PCMCIA IrDA 58 Serial 1 amp 2 5 Digital I O XScale ADSmartlO PXA255 CAN CAN bus
27. 6 10012 Applieddai Embedded Computer Systems Featu re Refe rence 4 4 4 4 1 4 4 2 a net Audio The GCX uses the UCB 1400 an AC 97 codec for stereo audio input and output Electrical specifications and architecture of the audio system are listed in section 6 4 13 Microphone Input The GCX supports the connection of an electret microphone to the MICSIG and MICGND inputs on J17 The audio signal runs through a DC blocking capacitor before reaching the codec The codec includes a software controlled amplifier that can control input gain When connecting external electret microphones to the GCX use the MICGND analog ground for best signal to noise ratio The GCX includes pull ups to power electrets microphones Section 6 4 13 includes electrical specifications and a block diagram of the audio input system Audio Outputs Speakers and Headphones The GCX supplies a single channel differential drive audio output suitable for driving a bridge tied speaker The GCX can also drive stereo headphones single ended drive speakers as a factory option Audio outputs are on header J516 Section 6 4 13 includes electrical specifications and a block diagram of the audio output system Connecting Speakers When using the GCX to drive speakers short the HP_IN signal to ground This places the output amplifier in differential mode Connect speakers to the SPKR_L and SPKR_R outputs on J516 SPK SPK Figure 4 Connecting
28. 6 unconnected for normal serial port operation Jumper setting Function none normal 9 wire operation 1 2 Shorts together J10 pins 2 DSR and 7 DTR ADS document 110116 10012 Page 15 Applieddata net GCX User s Manual Embedded Computer Systems 3 3 12 J19 Vee Polarity factory option 3 3 13 3 3 14 Page 16 Type 2x3 post header 2mm Location on board AS This jumper selects the polarity of Vee the contrast control voltage for passive LCD displays Vee is controlled with a PWM signal from the ADSmartIO See section 4 8 2 for further details Jumper setting Function none No Vee output go ym 2 4 Ba Positive Vee oo 3 4 En Vbacklight from J5 4 4 6 Ae Negative Vee JP23 Serial 1 RS 485 Terminator Type 2 post header 2mm Location on board B1 Install this jumper to make the GCX Serial 1 the last device in an RS 485 network Shorting the pins of this header places a 120 O termination resistor across the RS 485 RX lines Jumper setting RS 485 Terminator 1 2 installed n c not installed JP24 Use Onboard Power Supply for RTC Type 2 pin header 2mm Location on board A1 A2 This shunt allows the real time clock RTC circuit to be powered by the Vddx power supply WARNING This shunt should only be installed only by the factory Installing this shunt may cause damage to the onboard or external RTC battery 1f installed inappropriately
29. 610110 4004 e _ DB9F F null modem cable e Operating system of your choice e User s Guide this document and operating system guide Please make sure you have received all the components before you begin your development 2 2 Frequently Asked Questions The following are some of the most commonly asked questions for development systems O When I plug in power my screen is white and nothing comes up on it A Check the connector seating The flat panel connector may have come loose in shipping Press it firmly into the panel and reapply power to your system O When I plug in power the LED doesn t turn on A Your system may still be booting The LED is software controlled and is not necessarily turned on at boot O Do I have to turn off the system before I insert a PCMCIA card A No The GCX supports hot swapping of PCMCIA cards Consult the operating system documentation for details O Do I need to observe any ESD precautions when working with the system A Yes Where possible work on a grounded anti static mat At a minimum touch an electrically grounded object before handling the board or touching any components on the board ADS document 110116 10012 Page 5 GCX User s Manual Embedded Computer Systems 2 3 Page 6 Q What do I need to start developing my application for the system A You will need a flash ATA card 16 MiB or larger 32 MiB recommended and the cables supplied with your system to interfa
30. 8 or 3 3 V Logic Level See section 4 5 1 for details Serial 2 Header J23 for IrDA See section 4 5 1 for details Serial 3 3 3 V Logic Level See section 4 5 1 for details Mating Headers on Underside of Board Through hole signal headers can be mounted on the underside of the GCX This allows the GCX to sit on top of another board Note that added configuration charges may apply for the creation of alternate test fixtures Important When the headers are placed on the underside of the board the pin numbers will not correspond to the signals as described in this manual Lay out the mating board with this in mind Connector Plating ADS can populate headers with other platings as required Environmental Specifications The GCX is designed to work under a wide range of environmental conditions Symbol Parameter Min Typ Max Units Temperature Trun operating temperature 40 85 C ADS document 110116 10012 Page 49 GCX User s Manual Embedded rate Systems 6 4 6 4 1 6 4 2 Page 50 Electrical Specifications This section describes the electrical specifications of the GCX Power Supply The GCX is powered from a 5 V DC supply and generates additional voltages for onboard logic The 5 V and 3 3 V supplies are available on the GCX output connectors and are limited to the current draws specified below The system time is maintained by a DS1307 real time clock and powered by a long
31. CLK HSYNC LCLK FCLK VSYNC FCLK LBIAS DE LBIAS Brightness Control Backlight Most LCD displays include one or more cold cathode fluorescent lamp CCFL tubes to backlight the displays Some LCDs such as passive transflective displays can be viewed in daylight without backlighting Smaller displays sometimes use LED backlighting CCFL panel backlights are driven by backlight inverters These circuits are typically external to the display and generate the several hundred volts reguired to drive the CCFL tubes Backlights can easily become the greatest source of power consumption in a portable system Fortunately most backlight inverters include control signals to dim and turn off the backlight The GCX supplies two signals for backlight control BacklightPWM and BacklightOn The signals are found on header J13 BacklightPWM is a filtered PWM signal from the PXA255 that supplies an analog output voltage to control the intensity of the backlight The BacklightOn Intel PXA255 Processor Developer s Manual Order number 278693 001 March 2003 pp 7 20 to 7 22 19 Double pixel data DPD mode 1 ADS document 110116 10012 Page 41 Applieddata net GCX User s Manual Embedded Computer Systems 4 8 3 4 9 4 9 1 4 9 2 Page 42 signal is an open collector output to turn the backlight on and off See section 6 4 4 for electrical specifications Contrast Control Vee and Vcon Most passive panels requi
32. D UD Signal Type 2 post header 2mm Location on board A6 This jumper determines the voltage for the PNL_UD signal on J14 and J12 On some active matrix LCD displays the PNL_UD signal flips the displayed image bottom to top Jumper setting Connects UD to 1 2 GND n c PNL_PWR JP5 Source of Sleep Mode Power Type 3 post header 2mm Location on board A2 This jumper selects the source of power to back up the GCX when it is in sleep mode See chapter 5 for further details Jumper setting Voltage Selected 1 2 Vperm J5 pin 6 2 3 Vcc 5 0 V J3 pin 1 JP6 Source of 3 3 V Power Vddx Type 3 post header 2mm Location on board A2 This jumper selects the source of 3 3 V power Vddx for the system Standard production systems include an onboard 3 3 V regulator but the GCX will also run from an external 3 3 V supply 3 3V_IN from J5 pin 3 See section 6 2 for further details about related production options Jumper setting Vddx is supplied by 1 2 external source 2 3 onboard regulator ADS document ff 110116 10012 Applieddata net Embedded Computer Systems Hardware Refe rence 3 3 6 JP7 Serial 2 Mode Select Type 2x12 header unshrouded 2mm Location on board B2 C2 This header selects the communication mode of PXA255 Serial Port 2 The operating
33. GNDRS422 30 P GPIO12 32 10 PXA255 GPIOs 4 1 5 4 6 1 GPIO6 38 IO 33 VREF AO ADSmartIO A D reference voltage 4 3 35 VCC PO 5V 37 VDDX PO 3 3 V MU UN GND ga ground ADS document ff 110116 10012 Applieddata net Embedded Computer Systems 3 4 7 J8 Ethernet Board Connector RJ 45 socket Amp 555167 1 Hardware Recommended mating cable RJ 45 Ethernet cable 8P4C 8 position 4 contact Location on board D6 This header provides the signals for connecting to a 10 100 Ethernet network Reference Pin Name Type Description 1 IDT AQ Transmit 2 TD AO 3 RD AI Receive 4 n c 5 n c WE 6 RD AI Receive 7 n c 8 n c te Shield P Ground 3 4 8 J9 Manufacturing and Test Connector Board Connector 2x8 receptacle 2mm spacing Samtec SQT 108 01 L D Location on board B5 This header is used during manufacturing to program the boot flash onboard logic and ADSmartlO firmware These JTAG and SPI signals are intended only for factory use and are not otherwise supported In the table below pins are grouped by function Pin Name Pin Type Description 1 TRST TMS 2 I TDI 4 I 5 TCLK JTAG TDO 8 O 9 FWE FRDY 10 VDDX 6 PO 3 3 V 3 GND P 7 GND P ground VCC 12 5V 11 MISO O 13 SCLK I ADSMARTIO SPI for in system 15 PRG I programming MOSI 14 I GND 16 P ground ADS document 110116 10012
34. Larger displays will work with the XScale with some constraints imposed by the controller architecture The ADS Support Forums provide details about the design tradeoffs that are required to support larger displays Key features of the XScale controller include e Frame buffer is in system DRAM e Dual 16 x 8 byte display data FIFOs 4 8 2 Using the LCD Display Signals This section describes the features of the GCX used to control LCD displays LCD display signals are found on headers J12 and J14 Panel Voltages The GCX supplies 3 3 V or 5 V power to the LCD display Select this voltage with JP1 3 3 1 Please observe the cautions listed with the JP1 settings Additional voltages for backlight and contrast are described in sections below LCD Signals The LCD signals are driven by the XScale controller The signals are named using the XScale conventions LDDn LDDO through LDD15 as well as the pixel clock vertical sync and horizontal sync are all buffered at a factory set voltage See section 6 4 4 for full specifications The PNL_RL and PNL_UD signals are for active TFT displays that support changing the scan direction This feature allows the display to be flipped right to left RL or up and down UD by changing the voltage on these signals See section 6 4 4 for full specifications At the time of writing additional details about the XScale display controller are posted at http www applieddata net forums topic asp t
35. Manual 3 4 17 3 4 18 Page 26 Applieddata net Embedded Computer Systems J23 Remote IrDA Connector optional Board Connector 8 pin header 1 25mm keyed Molex 53261 0890 Recommended Mating Connector Molex 51021 0800 or Quadrangle Products kit RT51021 0800 18 Location on board D1 D2 Header J23 can replace IrDA transceiver U1 allowing off board placement of an IrDA transceiver See section 4 5 1 for details Pin Name Type Description UE I IR ANODE PO IrDA transmitter power 5 V I 2 n c n c 3 IR_TXD O IrDA transmit data 3 4 IF_RXD I IrDA receive data 4 5 IRDAON O IrDA transceiver control signal 5 6 IR_VCC PO IrDA receiver power 5 V 6 7 n c n c 8 GND P ground amp J516 Audio Output The GCX can drive either a single speaker or stereo headphones The speaker output is standard Speaker Output Board Connector 1x2 header 0 1 inch spacing Molex 22 23 2021 This header can be connected directly to a speaker See section 4 4 2 for details Pin Name Type Description 1 SPK AO 2 SPK AO Mono speaker output 4 4 2 Stereo Headphones factory option Board Connector 1x3 header 0 1 inch spacing Molex 22 23 2031Location on board A3 This header supplies output signals suitable for driving stereo headphones See section 4 4 2 for further details Pin Name Type Description 1 SPK AO Common 2 SPK_R AO Right channel 3 SPK_L
36. Support for stereo headphone output volume production option Adds JP24 for RTC power volume production option Enhancements AC 97 UCB 1400 replaces the UCB 1200 codec and touch panel controller Philips SJA1000T CAN bus controller replaces the Intel 82527 Amplifier for speaker output Option for stereo audio output Socketed boot ROM is now optional Vee is powered by Vbacklight 6 4 4 Other Changes Orientation of some configuration shunts has changed JP16 and JP17 are generally no longer needed as Serial 3 is now a 9 wire port Removes GC Plus JP22 LED1 audio oscillator Profile is slightly higher ADS document 110116 10012 Page 61 Applieddata net GCX User s Manual Embedded Computer Systems 7 2 2 7 2 3 Page 62 Revision A First production release This revision makes a number of mechanical changes that improve manufacturability and durability Enhancements RTC battery is mounted flat no longer vertical Changes JP5 and JP6 are rotated 180 degrees JTAG and ADSMARTIO ISP signals combine onto single header J9 Adds power on reset supervisor Improved PCMCIA power control logic Update Ethernet and CAN logic Update onboard 3 3V supply Vee and backlight PWMs move from ADSMARTIO to PXA255 Backlight on off moves from ADSMARTIO to CPLD Revision B Second production release Enhancements Sleep mode regulator can be turned off with a digital I O LCD power transistor supports higher current Ch
37. Y CGG ED FY DS YNG events 51 OAA DisplaYanis iii ariel ddr FdA y vena 52 GAS WCBVAOQO cito iriri tinte clarin Y Fe nend HYT FFF 53 6 4 6 _ Five Wire Touch Panel Controller factory option oooconocnnnnnnonnonncononononanonancnnccanoo 53 GAT ADSmartlO Controller inicio dae 54 AS A O 55 0 4 9 Serial POT Sz in dai is YNG di dal fra iii 55 6 4 10 USB ie i I cess e ee FRYN ces itinere Rd dru 55 GIA LT Ethernet aiii 55 64 12 CAN B scate ii I REEE 55 A AUdiO see deny iriri Wde YR yden an E ERE AEA F Ta 56 6 4 14 PXA255 O inii eiii sekecbiseedans de eckecacesdatacheshechacerdaestoceuscnbecoteendh GY Fn 58 6 4 15 Crystal Frequencies 25 3 sees secesssivd cues cases bs sug WY WIW GL DF inn stave YDA CEL Td 58 64 16 PCMCLAU SH Gu cousins ne SE A a Se DW 59 GAD Te Bus Masterren Ge fy oh sacha urea Mawes 59 Page vi Applieddata net ADS document ff 110116 10012 Applieddata net Embedded Computer Systems GCX User s Manual 7 Board Revision HAS i 61 7 1 Identitying the board revision 61 Fede Revision O A E 61 7 2 1 Revision di o o oa 61 New Features Enhancements Other Changes 22 IRGVISIOD As GT sweats Savi Y abs UF GWI Gu NF GW DY 62 Enhancements Changes 723 REVISION Be I a A A Y 62 Enhancements Changes ADS document ff 110116 10012 Page vii Applieddata net GCX User s Manual Embedded Computer Systems This page intentionally blank Page viii ADS document ff 110116 10012 Applieddat Embedded C
38. a Speaker Connecting Headphones Factory Option As a factory option the GCX can drive stereo headphones When this option is installed header J516 is a three pin connector Standard headphones use a plug wired as shown below Three rings on the plug provide right and left channels and a common return Mono headphones do not include the center ring The mating headphone jacks include spring contacts to make an electrical connection with the headphone and to mechanically hold the plug in place ES Shell common dn We Ring left channel Tip right channel or mono Figure 5 Typical Headphone Jack ADS document 110116 10012 Page 33 Applieddata net GCX User s Manual Embedded Computer Systems 4 5 4 5 1 4 5 2 Page 34 The following diagram illustrates one way to make use of the headphone output The user plugs stereo standard headphones into a 1 8 inch socket which is cabled to GCX header J516 SPK_L SPK_R PER SPK common E GCX J516 socket plug headphones oe Figure 6 Connecting Stereo Headphones factory option Data Communications The GCX has several built in channels for communication with peripheral and peer devices These include EIA TIA 232 422 and 485 J1708 logic level serial IrDA USB client port Ethernet CAN bus and rc Serial Ports The GCX has three serial ports driven by the XScale processor These asynchronous serial ports can be c
39. al details about these signals Pin Name Type Description 1 Power supply for backlight inverter 2 Vbacklight PO from J5 pin 4 GND P ground 5 BacklightOn oc On off control for backlight inverter 4 8 2 6 BacklightPWM AO Brightness control for backlight inverter 4 8 2 7 GND P ground J14 LCD Display 34 pin Board Connector 2x17 header 0 1 inch spacing TST 117 01 G D Recommended Mating Cable Samtec HCSD Series Location on board A6 B6 The following table describes the signals on the LCD interface connector Signal names shown are for TFT active matrix color LCDs at 16 bpp bit per pixel For other color depths and LCD technologies consult the table in section 4 8 2 Signals from the XScale are buffered and EMI filtered before reaching J14 See section 4 8 for further details about displays Pin PXA255 Color Active TFT Display at 16bpp Signal Name ADS Signal Name Description I PNL_VEE Veg contrast VR1 J19 4 8 2 2 GND ground 3 PCLK PNL_PIXCLK Pixel Clock 4 LCLK PNL HSYNC Horizontal Sync 5 FCLK PNL_VSYNC Vertical Sync 6 GND ground 7 LDD15 PNL_REDO 8 LDD11 PNL_RED1 9 LDD12 PNL_RED2 10 LDDI3 PNL_RED3 Rd 11 LDD14 PNL_RED4 12 LDD15 PNL_RED5 13 GND ground 14 LDD5 PNL_GREENO 15 LDD6 PNL_ GREENI 16 LDD7 PNL_GREEN2 FD 17 LDD8 PNL_GREEN3 18 LDD9 PNL_GREEN4 19 LDD10 PNL_GREENS 20 GND ground ADS do
40. anges Vee is not populated on standard production systems ADS document ff 110116 10012
41. cRxlrda Receiver power series resistance 10 o VccTxlrda Transmitter voltage 3 3 V RvccTxlrda Transmitter power series resistance 3 6 o Ptxlrda Transmitter power 330 630 mA 6 4 10 USB The GCX supports USB operation as described in section 4 5 4 See section 6 4 14 PXA255 for USB function port specifications 6 4 11 Ethernet The GCX uses an SMSC LAN91C111 10 100 BT Ethernet controller The MAC Media Access Control address is stored in a serial EEPROM connected to the controller 6 412 CAN Bus The GCX uses two SJA1000T CAN controllers with Intel 82C251 CAN transceivers for its CAN bus capabilities ADS document 110116 10012 Page 55 Applieddata net GCX User s Manual Embedded Computer Systems 6 4 13 Page 56 Audio For its audio sub system the GCX uses the Phillips USB 1400 an AC 97 stereo codec with dual audio input and output channels Specifications for other features of the UCB 1400 are listed in section 6 4 5 The standard GCX includes a power amplifier Texas Instruments TPA301DR to drive a single bridge tied output speaker As a factory option the amplifier can be removed and the signals rerouted to support the single ended stereo headphone output driver of the UCB 1400 The mono and stereo options are illustrated in the following diagrams Mono Speaker Output Stereo Headphone Output standard factory option MicP MicP Mic Gnd Mic Gnd SPK Line_out_R Line_out_R
42. ccnnoccccnnancccnnnanancnnnana cnn 3 8 V Input voltage A D inputs PA5 PA7 note 23 Symbol Parameter Min Typ Max Units Vdd ADSmartlO supply voltage 3 3 V Rs Series resistance note 20 33 1k Q Vprot note 20 V Digital Outputs 4 3 3 Vol 0 5 V Voh 2 3 3 3 V I sink see note 20 20 mA source see note 20 12 mA Digital Inputs 4 3 3 Vil 1 0 V Vih 2 0 V R Software selectable pull ups to 3 3 V 35 120 kQ see note 21 A D Inputs 4 3 4 4 6 2 n resolution note 22 8 10 bit Rin input impedance note 23 43 2 kQ Vin A D input voltage range note 23 0 10 8 V Vref A D reference voltage note 24 2 5 V lvref Current drain from ref voltage 100 uA Vref J10 43 100 uA Notes 20 Row and column l Os have series resistance and over voltage protection to ground The series resistance limits the dc current that any one pin can source or sink SMTIO2 and 3 PB2 and PB3 have 33 ohm series resistance so can source or sink the maximum current supported by the ATmega microcontroller 21 Control pull up resistors by writing to bits of IO port when the port is configured as a digital input bit m ask 1 enable O disable 22 Digital noise on the board may degrade analog performance under some conditions 23 ADSmartlO A D inputs include an input voltage divider of 33 2k series with 10k to ground 24 Vref is usually turned off when the system is in Sleep mode
43. ce your development station to the system For further direction consult the ADS guide for the installed operating system O Who can I call if I need help developing my application A ADS provides technical support to get your development system running For customers who establish a business relationship with ADS we provide support to develop applications and drivers O Is there online support A Yes Information about the GCX hardware and software is available on the ADS support site at http www applieddata net support See section 2 4 for further details O Can I upgrade the version of the operating system A Yes ADS provides regular operating system updates on its developers web site For operating systems not maintained by ADS contact the operating system vendor O I would like to interface to a different display panel How can I do this A ADS may have already interfaced to the panel you are interested in Consult ADS for availability Organization of this Manual The manual organizes information in five key sections Introduction Provides an overview of the functionality and organization of the GCX as well as how to use this manual Hardware Reference Describes the configuration settings and pinouts for all connectors and jumpers on the GCX Feature Reference Gives details about the various subsystems of the GCX Power Management Provides key information about power management tips for system integra
44. cument 110116 10012 Applieddata net Embedded Computer Systems Hardware Reference 21 LDD4 PNL_BLUEO 22 LDDO PNL_BLUEI 23 LDDI PNL_BLUE2 Blue data 24 LDD2 PNL_BLUE3 25 LDD3 PNL_BLUE4 26 LDD4 PNL_BLUES 27 GND ground 28 LBIAS PNL_LBIAS Data enable PNL_PWR Vcc 5 V or 3 3 V JP1 31 PNL_RL Horizontal Mode Select JP2 32 PNL_UD Vertical Mode Select JP3 33 PANEL_ENABLE PNL_ENA Panel enable signal 34 VCON Contrast control VR2 4 8 2 3 4 14 J17 Microphone Board Connector 1x2 header 0 1 inch spacing Molex 22 23 2021 Location on board A3 This connector allows for connection to an electret microphone See section 4 4 1 for details Pin Name Type Description 1 MICGND AP Microphone input 2 MICSIG AI Microphone input 3 4 15 J18 CAN Bus Board Connector 1x2 header 0 1 inch spacing Molex 22 23 2021 Location on board D7 The signals for CAN bus 1 are also available on header J15 Pin Name Type Description 1 CANHIGH IO 3 CANLOW IO CAN bus 4 5 6 3 4 16 J21 RTC Battery Connector factory option Board Connector 1x2 header 0 1 inch spacing Molex 22 23 2021 Location on board A1 For volume production orders this header can replace RTC battery See section 4 2 for details Pin Name Type Description 1 RTC_VBAT PI RTC battery 2 GND P RTC battery ADS document ff 110116 10012 Page 25 GOX User s
45. ddata net Embedded Computer Systems Hardware Refe rence 3 3 9 JP13 LCD Display Data Voltage Type 3 post header 2mm Location on board A6 This jumper selects the voltage for the data signals to the LCD display Important These jumpers are set at the factory to match the panel and drivers shipped with the system You may damage the panel or panel drivers if you change this jumper setting See section 6 2 for details about production options available to support different display data voltages Tip Most 5 V panels will run correctly with 3 3 V data Jumper setting Data to display is 1 2 3 3 V Vddx 2 3 5 0 V Vcc 3 3 10 JP16 Serial 3 DCD DTR Loopback Type 2 post header 2mm Location on board B1 This jumper connects together the DCD and DTR signals on J10 Note These loopback shunts are a holdover from the Graphics Client Plus design when the DTR DSR and DCD signals were not connected Leave this and jumper JP17 unconnected for normal serial port operation Jumper setting Function none normal 9 wire operation 1 2 Shorts together J10 pins 1 DCD and 7 DTR 3 3 11 JP17 Serial 3 DSR DTR Loopback Type 2 post header 2mm Location on board B1 This jumper connects together the DSR and DTR signals on J10 Note These loopback shunts are a holdover from the Graphics Client Plus design when the DTR DSR and DCD signals were not connected Leave this and jumper JP1
46. der J7 Vddi is a variable voltage power supply controlled by the XScale I C bus 4 5 7 6 4 1 This voltage scaling feature allows the operating system to manage power consumption over the full range of CPU clock rates Options available to volume production customers are indicated by dashed lines in the diagram above but are otherwise outside the scope of this manual Contact your ADS sales representative if you believe one or more of these options is required for your order Specifications for the GCX power supply are listed in section 6 4 1 System Sleep ADS document ff 110116 10012 Appliedda Embedded Computer Systems Power and Power Management 5 2 3 5 2 4 5 2 5 ta net This section describes several methods for putting the system into Sleep mode Section 5 2 3 describes how to return the system to Run mode Software Control Applications can put the system to sleep programmatically Operating systems may also put the system to sleep In remote battery powered applications software Sleep can be used in conjunction with the Timed Wakeup feature section 5 2 3 for minimum power consumption RgOnOff Input Operating systems and applications can configure the ROONOFF signal to put the system to sleep In conjunction with the wakeup function below the ROONOFF input can be used as an on off button for some systems Electrical specifications are listed in section 6 4 3 System Wakeup This section describes seve
47. described in section 4 5 7 _ Parameter Min Typ Max Units bus clock note 30 100 400 kHz buffer size 1 byte Rbus 1 8 kQ Vbus pull up on SDA SCK 33 V Rseries resistance to ADSmartlO bus 33 Q Notes 30 The PXA255 supports standard and fast I2ZC speeds of 100 and 400 kHz ADS document 110116 10012 Page 59 Applieddata net GCX User s Manual Embedded Computer Systems This page intentionally blank Page 60 ADS document 110116 10012 Embedded Computer Systems 7 Board Revision History 7 1 Identifying the board revision The product revision number of the GCX is etched on the underside of the printed circuit board That number is 170116 1000x where x is the board revision 7 2 Revision History The following is an overview of the revisions of the GCX circuit board 7 2 1 Revision 1 Initial release The GCX was designed to be backward compatible with the StrongARM SA 1110 Graphics Client Plus product The following summarizes the changes from revision F of the GC Plus New Features Serial 3 adds four modem control signals to become a 9 wire serial port NSSP signals replace unused modem interface lines on J2 Pin From To 19 UCB_TINP NSSP RXD 21 UCB_TINN NSSP TXD 23 UCB TOUTN NSSP SFRM 25 UCB_TOUTP NSSP SCLK LAN91C1111 10 100 Ethernet controller replaces 1OBT LAN91C96 Supports five wire touch panels volume production option
48. e ports pins are used internally while others are available for user applications See the signal cross reference in section 4 3 6 for details Generally ADSmartlO ports are referenced by port and pin number e g PA2 but I O signals may go by several names based on its functionality See the connector pinouts to cross reference ADSmartlO signal names Electrical specifications for the ADSmartlO are listed in section 6 4 3 The ADSmartIO Programmer s Reference ADS document 110110 4004 gives information about how to use the ADSmartlO features ADSmartlO Features The following are some of the functions that the ADSmartIO can perform The functions actually implemented depend on the firmware loaded on your system e General purpose digital I O and A D e Keypad scan section 4 3 5 PS 2 keyboard input e Wakeup via ROONOFF signal section 5 2 2 e Reset CPU Digital I Os All available ports on the ADSmartIO controller can be individually configured as inputs or outputs If you write a 1 to an I O port when it is configured as an input it enables a pull up resistor Electrical specifications are listed in section 6 4 7 Other digital I Os are listed in section 4 6 1 ADS document 110116 10012 Applieddata net Embedded Computer Systems Featu re Refe rence 4 3 4 Analog Inputs A D Each of the Port A I Os PA0 PA7 includes an analog to digital A D converter The converters give full scale readings when the voltage
49. el A D sample resolution 10 bit Digital Outputs 4 6 1 Vol lol 2mA 0 4 V Voh loh 2mA 2 8 V Digital Inputs 4 6 1 Vil 0 8 V Vih 2 0 V A D Inputs 4 6 2 n resolution 10 bit Rin input impedance note 19 1 3 kQ Vin A D input voltage 0 10 V Vref A D reference voltage 1 65 V Notes 19 UCB1400 analog inputs include a 75 voltage divider with 3329 in series and 1kQ to ground Five Wire Touch Panel Controller factory option Standard GCX systems use the UCB 1400 to drive the touch panel For volume production orders it is also possible to install touch panel controllers from Texas Instruments In this case the GCX uses the ADS7846 to support four wire analog resistive touch panels and the ADS7845 to support five wire panels All touch panel signals are ESD and RF protected Symbol Parameter i Typ Max Units ADS7845 and ADS7846 Vdd Supply voltage Vddx V A D sample resolution 12 bit ADS document 110116 10012 Page 53 GOX User s Manual Applieddata net Embedded Computer Systems 6 4 7 Page 54 ADSmartlO Controller The ADSmartIO Controller is a second RISC microcontroller on the GCX designed to handle I O functions autonomously The GCX communicates with the ADSmartlO controller via the system controller CPLD On the GCX ADSmartlO is implemented with the Atmel ATmega8535L microcontroller which has 512 bytes EEPROM Absolute Maximum Ratings Input voltage any pin ooconnocc
50. isplay Hirose Board Connector 31 pin Hirose DF9B 31P 1V Location on board B6 underside of board Hardware Reference This header can be used to directly connect to some active Sharp TFT displays and products that are compatible with them The signals on this connector are a subset of the signals on J14 See section 3 4 11 for more detailed descriptions of the signals Pin Name 16bpp Pin Type Description 1 GND O ground PNL_PIXCLK 2 O Pixel clock 3 PNL_HSYNC O Horizontal sync PNL_VSYNC 4 O Vertical sync 5 GND O ground PNL_REDO 6 O 7 PNL_RED O PNL_RED2 8 O 9 PNL RED3 O a Cae PNL_RED4 10 O 11 PNL_RED5 O GND 12 O ground 13 PNL_GREENO O PNL_GREENI 14 O 15 PNL_GREEN2 O Greer data PNL_GREEN3 16 O 17 PNL_GREEN4 O PNL_GREEN5 18 O 19 GND O ground PNL_BLUEO 20 O 21 PNL_BLUEI O PNL_BLUE2 22 O Blue data 23 PNL_BLUE3 O PNL_BLUE4 24 O 25 PNL_BLUE5 O GND 26 O ground 27 PNL_LBIAS O Data enable g PNL_PWR Decan 2 Panel power JP1 PNL_RL 30 O Horizontal Mode Select JP2 31 PNL_UD O Vertical Mode Select JP3 ADS document ff 110116 10012 Page 23 Applieddata net GCX User s Manual Embedded Computer Systems 3 4 12 3 4 13 Page 24 J13 Backlight Inverter Board Connector 7 pin Molex 53261 0790 Location on board A2 A3 See the Brightness Control Backlight paragraph in section 4 8 2 for addition
51. l 3 3 8 Page 14 Embedded Computer Systems drop installations Each can be configured in half or full duplex mode The GCX supports RS 422 by leaving the transmitter enabled all the time In half duplex mode TX RX and TX RX are shorted together Half duplex devices can see their own transmissions Connect to either the or connection on J7 but make sure to observe correct polarity Headers shaded gray in the following table are not relevant to the mode listed but are shown for reference Serial 1 Mode Jumper Settings Standard Signals Biz X RX E i i RTS gt EIA 232 j CTS Re Si GND 7 s JP11 a Mau i Po CE JP 14 Re db De de RS 485 422 o ane gt Full Duplex A RX a Se s HAU RS 485 3 Half Duplex A E LXXX gt J1708 E XI S1 E re JP12 Vee Control factory option Type 3 post header 2mm Location on board A5 Jumper JP12 selects how Vee is adjusted If the shunt set for manual operation VR1 3 2 5 controls the Vee output Setting the shunt to software controlled operation adds a connection to the Vee PWM which allows software to adjust the Vee output voltage In software controlled mode VR1 is still used to calibrate the standard Vee output usually at room temperature Jumper setting Vee adjustment 1 2 Software controlled VRI 2 3 Manual VR1 only ADS document 110116 10012 Applie
52. led by PXA255 PWMO Vcon is the 3 3 V PWM signal RC filtered with a 43 1k 750Q voltage divider As a factory production option Vcon can be controlled by variable resistor VR2 3 2 6 giving an output range of 0 to PNL_PWR For factory options see section 6 2 The BacklightOn signal is an open collector output managed by the system controller CPLD As an option for volume production orders the pull up resistor can be removed for use with an external pull up resistor The maximum voltage rating of the transistor is listed The standard configuration for BacklightPWM signal is as an open collector output with a 5 V pull up Supply the Vbacklight voltage at power header J5 pin 4 For volume production orders the PWM output can be configured as 3 3 V 5 V or Vbacklight open collector output with or without an output filter capacitor For other factory options see section 6 2 The backlight PWM output is driven by PXA255 PWM1 ADS document 110116 10012 Applieddata net Embedded Computer Systems Syste m Specificatio ns 6 4 5 UCB1400 6 4 6 The UCB 1400 drives the audio subsystem the analog resistive touch panels analog inputs and ten digital I Os See section 6 4 13 for audio specifications Absolute Maximum Ratings Input voltage any pin oooonncccconncococonancccnnnanancnnnana cnn 5 5 V Symbol Parameter Min Typ Max Units Vdd Supply voltage Vddx V Touch Pan
53. life battery Panasonic BR1225 1HC or equivalent located at D5 D6 on the top side of the GCX Symbol Parameter Min Typ Max Units System Power 5V_IN 5 0 V power input 5 4 75 5 0 5 25 V VDDI Processor core voltage 6 4 14 0 85 1 0 1 3 V 3 3 V onboard supply Run 3 1 3 3 3 5 V VDDX 5 Sleep 3 15 V 3 3 V available for Ri 7 A Vado display PCMCIA a 09 a external peripherals etc Note 1 Sleep 100 mA Vcc 5 v available for display and external 1000 WA peripherals note 2 RTC Backup Power 4 2 V BATPOS real time clock battery backup 2 2 3 0 3 6 V I BATPOS RTC current note 3 300 500 nA Notes 1 _ During Sleep mode Vddx is powered by a linear regulator which is powered by the voltage selected by JP5 3 3 4 2 ln addition to the limits of the external 5V_IN power supply the 5 V output is limited by the trace widths on the printed wiring board 3 _ Vddx 0V Vbatpos 3 2 V source DS1307 data sheet Power Consumption The following table lists typical power consumption for the GCX at varying activity levels Power consumption varies based on peripheral connections components populated on the system and the LCD panel connected Factors that affect power consumption to a lesser extent include input voltage temperature and the level of processor activity LCD displays and backlights add significantly to the total power consumption of a system ADS development
54. lowing are a few of the ways your system may leak when asleep e PCMCIA cards Cards in place when the system is asleep can drain power through the Card Detect and Voltage Sense lines Assume that all four lines ground the GCX PCMCIA pull ups section 6 4 16 while the card is inserted e Digital I Os Review digital I O connections for potential voltage differences from external connections when the GCX is asleep Page 46 ADS document 110116 10012 Applieddata net Embedded Computer Systems 6 System Specifications 6 1 Mechanical Specifications The GCX is 4 0 inches by 6 0 inches in size This section describes the component dimensions and mounting of the board Detailed drawings are available on the support forums section 2 4 and 3D models are available from ADS in electronic format for production customers 6 1 1 Mechanical Drawing The following mechanical drawing specifies the dimensions of the GCX as well as locations of key components on the board The PCMCIA ejector can be detached from the board header and is a volume production option All dimensions are in inches This image is an excerpt from the full mechanical drawings ADS document number 630116 1000B a Ve oo o un o gt 4 wo o o o lt gt o mM co wu cu _ cu unu mo es wo 3 Y o 3 J6 J5 J516 3 3 3 3 200 3 043 2 100 1 700 FC 250 188 o mo o gt O 4 uu
55. mary site for non volatile data storage The GCX includes a bank of flash memory for non volatile data storage The board supports 8 16 or 32 MiB of installed flash The data bus width is 32 bit ADS systems store the operating system applications and system configuration settings in the onboard flash Most operating systems configure a portion of the flash as a flash disk which acts like a hard disk drive ADSmartlO EEPROM The ADSmartlO controller includes 256 bytes or more of EEPROM storage ADS reserves a portion of this memory for future use Drivers may not be available for all operating systems CompactFlash and PCMCIA ATA Cards CF and ATA cards provide removable storage in a wide variety of capacities These cards can be cost effective means to expand system storage capacity for user applications that provide access to the PCMCIA slot You may use CompactFlash cards on the GCX when they are in inserted into a PCMCIA adapter sleeve 128 MiB SDRAM was not yet commercially available as of April 2003 ADS document ff 110116 10012 Page 27 GOX User s Manual Page 28 Applieddata net Embedded Computer Systems RTC NVRAM The real time clock chip includes 56 bytes of non volatile RAM The RAM is maintained as long as main or backup power is provided to the chip Built in drivers may not be available to access this feature but the RAM can be accessed using the I C driver Contact ADS Sales if your application reguires
56. n 6 4 11 4 5 6 CAN Bus CAN bus Controller Area Network is a protocol developed for the automotive industry that is increasingly being used in industrial control and automation applications The GCX includes a CAN controller suitable for connection to a wide range of CAN networks The CAN signals are available on header J18 Details and electrical specifications are listed in section 6 4 12 Page 36 ADS document 110116 10012 Applieddata net 4 5 7 Embedded Computer Systems Featu re Refe rence 12C Bus Master PC Inter IC Bus is a multi master two wire synchronous serial bus developed by Philips for communications between integrated circuits ICs The bus master addresses devices using the data line and provides a synchronous clock for reading and writing devices Client devices respond only when queried by the master device Philips has developed many I C devices but other organizations e g Maxim have adopted I C as a convenient means for addressing peripherals in a system PC on the GCX The GCX uses the XScale 1 C interface to communicate with the real time clock section 4 2 and the CPU core voltage controller Applications can also use I C to communicate with external peripherals The following diagram illustrates the I C architecture on GCX Parts are shown populated as they are found on standard production systems Vddx f XScale S J2
57. nal status Designator Color Signal Controlled by D3 Green LEDO PXA GP20 D2 Amber LED PXA GP19 Dl Red LED2 PXA GP21 The LEDs are driven by the same buffers as the display driver data lines so will be off when the display buffers are disabled The driver voltage for the buffers is selected by JP13 Ethernet LEDs Location on board D6 Ethernet socket J8 Two LEDs integrated into Ethernet socket J8 indicate when a valid Ethernet connection has been made and when there is activity on the bus ADS document 110116 10012 3 2 4 3 2 5 3 2 6 3 3 3 3 1 Embedded Computer Systems Hardware Refe rence IrDA Transceiver Location on board D1 D2 U1 is an IrDA transceiver that converts Serial 2 electrical signals to infrared light pulses for IrDA communications For volume production orders U1 can be replaced with a socket J23 for cabling to an external transceiver See section 4 5 2 for further details VR1 Vee Contrast Adjustment factory option Location on board A6 Vee is the contrast adjustment voltage required for most passive LCD displays VR1 and a PWM signal set the output voltage for Vee See JP12 and section 4 8 2 for further details VR2 Vcon Contrast Adjustment factory option Location on board A5 Vcon is used to adjust the contrast for some passive LCD displays See section 4 8 2 and Note 14 of section 6 4 4 for further details Jumper Settings Jumpers on the GCX
58. nects to a four wire analog resistive touch panel For volume production orders the GCX can also be configured to drive 5 wire touch panels Pin Name Type Description 4 wire 5 wire 1 TSMX AIO left LL 2 TSPX AIO right UL ch 3 TSPY AIO bottom UR 4 TSMY AIO top LR 5 WIPER AI n a WIPER 5 wire option ADS document ff 110116 10012 Applieddata net Embedded Computer Systems 3 4 4 J5 Input Power Connector Board Connector 1x6 Molex 22 23 2061 0 1 inch spacing Location on board A2 Hardware Reference J2 supplies power to the GCX 5V_IN is the main power supply See section 5 2 1 for an overview of how the GCX power supply is structured Pin Name Type Description 1 5V_IN PI SV input power 2 GND_IN PI Ground 3 3 3V_IN PI 3 3V input power 3 4 Vbacklight_IN PI Backlight and Vee power 5 2 1 Output for power supply management 2 POWERON Q low when system is asleep or off 5 2 1 5 2 2 6 VPERM PI Permanent voltage 5 2 1 3 4 5 J6 PS 2 Keyboard Board Connector Mini DIN 6 socket housing Singatron 2MJ 0004A110 Recommended mating connector PS 2 mini DIN 6 keyboard plug Location on board A2 Socket J6 supplies power and communication signals for a PS 2 keyboard The shell of the socket is electrically connected to the board mounting holes chassis ground Pin Name Type Description 1 SIGPS2 IO PS 2 ke
59. oad the mechanical drawing of the GCX from the ADS Support site section 2 4 The sguare or indicated pad on each connector is pin 1 Switches Controls and Indicators This section describes various switches controls and indicators on the GCX board The location indicated for each item refers to the grid diagram of the GCX in section 3 1 1 S1 DIP Switch Location on board C2 S1 is a four position DIP switch When in the ON position switches are closed and connect to ground Otherwise they are pulled up The DIP switches connect to the system controller Most GCX bootloaders reserve these switches for their use Consult the operating system manual for details SW1 Reset Switch Location on board D5 SWI is the reset button for the GCX This switch issues a hardware reset to the PXA255 and system peripherals Press this button to restart the GCX without cycling power Most operating systems clear the contents of DRAM when a hardware reset occurs You can hold the GCX in reset by pressing and holding this button LED Indicators The GCX has several onboard light emitting diodes LEDs to indicate system operation Some are software controllable while others indicate the status of specific functions Software Controllable LEDs Location on board B6 Three LEDs are controlled by the CPU section 4 1 5 and are used to indicate boot and operating system status These LEDs can often be used by applications to indicate operatio
60. omputer Systems a net 1 Introduction 1 1 1 2 1 2 1 1 2 2 1 2 3 1 2 4 Overview The Graphics ClientX GCX is a complete single board computer featuring the PXA255 XScale RISC microprocessor The GCX is designed to meet the needs of embedded and graphical systems developers and provides a forward upgrade path from the ADS Graphics Client Plus This manual applies to the most current revision of the GCX listed in Chapter 7 the Revision History Features Processor e PXA255 32 bit XScale Applications Processor e 400 MHz CPU clock typical e Voltage and frequency scaling Power Supply e 5 V main power e System backup and real time clock power inputs Memory e 64 MiB synchronous DRAM e 32 MiB flash RAM e PCMCIA Type I and II 3 3 and 5 V Communications e Three Serial Ports Serial 1 EIA TIA 232 3 3V logic 5 wire EIA TIA 422 485 or J1708 Serial 2 EIA TIA 232 3 3V logic 5 wire or IrDA Serial 3 EIA TIA 232 or 3 3V logic 9 wire e 10 100BT Ethernet RJ45 e 1 Mbps CAN Bus Controller e PCMCIA The GCX supports 16 32 and 128 MiB SDRAM for volume production orders MiB is the IEC abbreviation for mebibyte 2 byte 1 048 576 byte The kibi and mebi abbreviations are based on the 1998 IEC standard for binary multiples For further reading see the US NIST web site http physics nist gov cuu Units binary html 3 The GCX supports 8 16 and 32 MiB of synchronous flash memory and
61. on the BitsyX SSP on the GCX The GCX has two SSP channels both driven by the XScale PXA255 The SSP port communicates with the ADSmartIO controller The signals for that port are brought out to header J9 for ADSmartlO in system programming at the factory but the port is not otherwise supported for application use The second channel is the PXA255 NSSP port The GCX offers the NSSP port on header J2 for communication with an off board device As a factory option the NSSP port may instead be used an SPI bus master to communicate with a five wire touch panel controller The PXA255 NSSP port can be software configured to make use of one or more of the following features e Data widths from four to sixteen bits e _ 16 entry transmit and receive FIFOs with burst mode data transfers to from RAM e Adjustable FIFO threshold interrupts e Bit clock speeds up to 1 84 MHz up to 13Mbps with slave clock input and DMA e Support for Motorola s SPI National Semiconductor s Microwire and Texas Instruments SSP Synchronous Serial Protocol Electrical specifications for the NSSP port are listed in section 6 4 14 Consult the operating system references for details about how to use the NSSP port for external devices ADS document 110116 10012 Page 35 Applieddata net GCX User s Manual Embedded Computer Systems 4 5 4 USB The GCX includes signals for a USB 1 1 Function port The USB Function signals are on header J2 and are connected to
62. onfigured in the field for a variety of operational modes as shown below A few additional options are available to volume production orders see section 6 2 for details Port signals Headers Standard Production options J7 JP8 11 EIA TIA 232 2 JP14 15 EIA TIA 422 485 11708 3 3 V logic EIA TIA 232 2 5 J7 JP7 IrDA 3 3 V logic header J23 for IrDA 3 9 mo EIA TIA 232 3 3 V logic JP16 17 E XScale UART The XScale processor supplies three standard serial ports The Bluetooth UART is Serial 1 on the GCX the IrDA UART is GCX Serial 2 and the Full featured UART is GCX Serial 3 The Serial 2 CTS and RTS serial handshaking signals are XScale GPIO lines that must be controlled by the software drivers when Serial 2 is operated as EIA TIA 232 or 3 3 V logic Ports that are configured for 3 3 V logic operation connect directly to the XScale and should be treated electrically as GPIOs See section 6 4 14 for GPIO electrical specifications and 6 4 9 for serial port specifications IrDA The GCX supports IrDA the Infrared Data Associations wireless communication standard through a combination of hardware and software IrDA hardware consists of infrared transceiver U1 an enable line and the power circuitry needed to supply the bursts of power that drive the infrared LEDs The software consists of a driver that ADS document 110116 10012 Applieddata net 4 5 3 Embedded Computer
63. opic_id 990 Page 40 ADS document 110116 10012 Applieddata net Embedded Computer Systems Featu re Refe rence Creating LCD Display Cables ADS has designed cables for a wide variety of displays See the list of supported displays on the ADS support forums Cable drawings for supported displays are available on request While ADS does not provide support to customers to create their own cables designers with LCD display experience may be able to design their own For those that do so a key point to keep in mind is that the PXA255 LCD interface maps its display controller pins differently based on LCD technology and color palette size The following table illustrates how they are mapped for some of the more common technologies Consult the PXA255 User s Manual for more information XScale Color Active Color Passive Mono Passive Signal Name 16 bit 12 bit Dual Single Dual Sn8t Single LDDO BO BO DUO DO DUO Do DO LDDI Bl BI DUI DI DUI DI DI LDD2 B2 B2 DU2 D2 DU D2 D2 LDD3 B3 B3 DUS a D3 DU3 D3 D3 LDD4 B4 DU4 D4 DLO D4 LDD5 GO GO DUS DS DLl S _D5 not LDD6 Gl Gl DU6 D6 DL2 3 D6 used LDD7 G2 G2 DU7 D7 DL3 D7 LDD8 G3 G3 DLO LDD9 G4 DLl LDD10 G5 DL2 LDDII RO RO Di3 S ee LDDI2 RI RI DLA 3 LDD13 R2 R2 DLS LDD14 R3 R3 DL6 LDD15 R4 DL7 PCLK PCLK PCLK L
64. ower consumption by pausing the processor core clock Processor peripherals remain enabled This mode is used for brief periods of inactivity and offers a quick transition back to Run mode e Run mode is the typical mode used when applications are running It offers the best MIPS mW performance vs power performance when running applications from RAM e Turbo mode runs the processor core at up to three times the Run mode speed Since external memory fetches are still performed at the memory bus freguency Turbo mode is best used when running the application entirely from cache Most handheld and portable systems available today never really turn off They make use of power management algorithms that cycle the electronics into idle and sleep modes but never fully remove power from the full system Power Management on the GCX The GCX can actively be configured to be in XScale Run Turbo or Sleep modes Idle mode is controlled by the operating system or application and is typically transparent to the application In Turbo Run and Idle modes the power supplies are in their standard full power state and applications run normally on the system The operating system is responsible for adjusting the core voltage Vddi for optimal power consumption in each mode In Sleep mode sometimes called Suspend mode the processor puts the SDRAM in a low power self refresh mode the processor core shuts off most peripheral sub systems are shut d
65. own and the power supplies drop into low power states or turn off entirely In this state most of the power that the GCX consumes is from maintenance of the RAM see section 6 4 2 for specifications The system can be awakened and returned to the Run state by initiating a system wakeup using one of the methods described in section 5 2 2 ADS document 110116 10012 Page 43 Applieddata net GCX User s Manual Embedded Computer Systems 5 2 5 2 1 Page 44 Architectural Overview and Power Management Features This section provides an overview of the architecture of the GCX power supply and a description of the various features of the GCX power management systems Power Supply Architecture The GCX power supply is organized as shown in the following diagram Vcc 5V_IN gt Vcc_sw PowerOn CE lt 4 3 3V IN 7 from CPU aa an A A II GS 2 a cb EN JP6 Vddx gt switcher PS 3 Vddx_sw 2 VPERM ees jou t B3 gt 0 _ Jp5 Vddi Vddi switcher to CPU core Vee Vee to display Vbacklight IN gt to backlight PWM and inverter connector Figure 9 The GCX Power Supply Both Vcc 5 V and Vddx 3 3 V have switched counterparts that are turned off when the board is in Sleep mode Vcc_sw and Vddx_sw are used internally while Vcc and Vddx are available to external peripherals on hea
66. ral mechanisms for waking an GCX system that has been placed in Sleep mode section 5 2 2 The system will resume operation in Run mode unless the power supply voltage is lower than Vsleep section 6 4 3 If the input voltage is too low the system will not wake under any circumstances This protects the RAM from getting corrupted by an under voltage condition RgOnOff Input Shorting the ROONOFF signal to ground will wake the system The signal is connected to the CPU GPIOO 4 1 5 Electrical specifications are listed in section 6 4 8 Timed Wakeup The XScale can wake up at a predetermined time This feature is controlled by software Backlight Power The GCX provides software control of Backlight Intensity and On Off Power for the backlight is routed through the board from header J5 out to J13 This provides the greater flexibility when selecting backlight inverters for an application See section 4 8 2 for further details about backlight control Power Supply Efficiency The GCX power supply achieves high efficiency through several means First it utilizes high efficiency switching regulators These regulators use conventional step down switchers under operating load conditions but are configured by the system for linear and burst mode operation during low load conditions that occur during system sleep Additionally there is only one level of cascaded regulation reducing the losses that multiply through each stage H
67. re a positive or negative voltage in the range of 15 30 volts to bias the passive LCD display The GCX includes the Vee and Vcon factory option to address this need The GCX Vee generator generates positive or negative voltages up to thirty volts Some factory configuration is usually needed to match the reguirements of specific displays The Vcon output is a low voltage PWM controlled analog output that can control contrast of displays that have their own onboard Vee generator Electrical specifications for Vee and Vcon are listed in section 6 4 4 Developing Display Drivers ADS provides display timings for supported displays on reguest For displays not yet supported ADS has a panel configuration service to creates panel timings and cable drawings Contact ADS Sales for further details EMI RFI and ESD Protection The GCX board incorporates a number of standard features that protect it from electrostatic discharge ESD and suppress electromagnetic and radio frequency interference EMI RFI Transient voltage suppressors EMI fences filters on I O lines and termination of high frequency signals are included standard on all systems For details see electrical specifications for subsystems of interest Agency Certifications Many products using ADS single board computers have successfully completed FCC and CE emissions testing as a part of their design cycle Because ADS supplies only the single board computer and not fully integrated sy
68. sa eat du ease he UY Yd 39 4 7 gt Touch Panel eie ui dyn GY taut E Di CYF FY ebay SD aden teat 39 4 8 Display Controller eiii Fi cited GR Y GYD iria adicciones 40 4 8 1 The XScale Display Controller isinan e ena a E E E 40 4 8 2 Using the LCD Display SignalS ononnnnnninnnnocnnnnnonnnonnconccononononnnonn E 40 Panel Voltages LCD Signals Creating LCD Display Cables Brightness Control Backlight Contrast Control Vee and Vcon 4 8 3 Developing Display Drivers renina roren a AA r A A A ncnnccnnoo 42 4 9 EMVRFIand ESD Protectii siieu E A D a 42 4 9 1 Agency C rtificatiohS eeren rer aliada EE EES EASi 42 4 9 2 Protecting the Power Supply Inputs oonconncnnnnnnonnonnnonnnonnnononononnnonnconn conocio nono ncnnncnnoo 42 5 Power and Power ManageMeNt ooococccoccnonononconncononononononnnonnnonn nono non a an AKEE R EEEE 43 Si Power Management Modest td 43 5 1 1 XScale Power Management Modes ooooconocnnonconnconononocononononononnncnn non nonn non ncnnnonn cnn ccnnos 43 5 1 2 Power Management on the GCX ooccooccnocononconncononononononononononnnonn nono nonn cnn ncnn conan canccnnos 43 5 2 Architectural Overview and Power Management Features oooonccnnnnnncnnoncnonconnconcnononanonononnss 44 2 21 Powersupply Architectur6t oee iu Ge ae iaa 44 ADS document ff 110116 10012 GOX User s Manual Embedded Computer Systems IS A O 44 Software Control ROOnOff Input X23 System WakcUp ica ia 45 ROOnOff Input Timed Wakeup 9 24 Backlight
69. section 5 2 2 25 Specifications based on ADSmartlO release 1010 rev 2 ADS release 7001 14 10102 ADS document ff 110116 10012 Applieddata net Embedded Computer Systems Syste m Specificatio ns 6 4 8 System Controller A Xilinx XCR3064XL CPLD on the GCX provides system logic for chip selects power management interrupt decoding clock generation PCMCIA logic and other system control functions It is programmed at the factory using the JTAG interface 3 4 8 Absolute Maximum Ratings Input voltage digital I O pins 0 5 to 5 5 V Output current continuous digital VO PINS eese rinio aniraa ina 100 to 100 mA Symbol Parameter Min Typ Max Units Vdd Supply voltage 3 3 V Digital Outputs Vol lol 8mA 0 4 V Voh loh 8mA 2 4 V Digital Inputs Vil Low level input voltage 0 0 8 V Vih High level input voltage 2 0 5 5 V 6 4 9 Serial Ports The GCX supports several serial ports as described in section 4 5 1 Serial ports 1 through 3 are controlled by the XScale processor EIA 232 signals are generated using charge pump devices e g Sipex SP3232 and SP3243 Signals 422 485 J1708 are buffered with the Maxim MAX491 IrDA signals from the XScale are converted to IrDA using a Vishay TFDU6100 infrared transceiver Symbol Parameter Min Typ Max Units Logic voltage serial ports 3 3 V IrDA 4 5 2 VecRxirda Receiver voltage 3 3 V Rvc
70. see 11 3 3 Jumper SONO mai as EREK EOE O RN yd 11 3 3 1 JPL LED Display Power concerner iurien e ii a eias 11 3 32 JP2 LCD RE Signal sico enie i FF GYD yn LY NER E E E aa 12 3 3 3 JP3 LED UD Signal ereinen e neaei A EE REEE E Eas 12 ADS document 110116 10012 Page iii GOX User s Manual Page iv 3 4 Applieddata net Embedded Computer Systems 3 34 JP5 Source of Sleep Mode Power arcore ieseni E RE 12 3 3 5 JP6 Source of 3 3 V Power VddX serenan e o a e ii 12 33 6 JPL Seriali2 Mode Select ae needed de esses ae eee dhe evr 13 3 3 7 JP8 11 JP14 15 Serial Port 1 Mode Select oooooooooocccnnnoooonononocononanananonoconnnnnnnnnnonos 13 3 3 8 JP12 Vee Control factory OPtiON oooncnnncnonnnonnnonononcnnncnnncnncconcnono nono nn conan cancion E 14 3 3 9 JP13 LCD Display Data Voltag8 ooonnncnnncnoonnonnnonononcnnnconcconccononono EE i 15 3 3 10 JP16 Serial 3 DCD DTR Loopback ooooonccnocnnocccocinoncnnnnonnconccononono nano nononnncnnccnnccnnonns 15 3 3 11 JP17 Serial 3 DSR DTR Loopback isosisko iryo 15 3 3 12 J19 Vee Polarity factory Option sssini ne E E EE 16 3 3 13 JP23 Serial 1 RS 485 Terminator oooonncnnncnoonnonnnononononnncnnnconnconcnono a conan eiei 16 3 3 14 JP24 Use Onboard Power Supply for RTC ooonconnccnoconoccnonconocononononanonanonnnonnconaconncnns 16 Sinal RTS 17 34 1 Jz4ContactClosure Detect eiu ae 17 34 2 J2 VO Analog Inputs USB Function Port NSSP KC RH 17 SAI JA
71. ss control 18 RDY O Variable latency access CPU ready 19 LEDI O 20 LEDO O Onboard LED outputs 21 LED2 O 22 ADCSYNC UCB1400 A D synchronization 23 SCLK C O SPI to touch panel controller 24 SFRM C O 7 Important The PXA255 has restrictive constraints concerning timing of successive interrupts While you may configure one or more XScale GPIOs as interrupt sources it s possible to create a condition under which interrupts in rapid succession can cause the processor to lock up ADS document 110116 10012 Applieddata net Embedded Computer Systems Feature Reference GPIO SignalName Typ Function connector section 25 TXD C O 26 RXD C I 27 RESETAVR O Reset ADSmartlO controller 28 BITCLK 29 SDATA_IN 30 SDATA OUT AO CONE 31 SYNC 32 RTS2 O Serial 2 RTS 4 5 1 33 n c unused 34 RXD3 I 35 CTS3 I 36 DCD3 I Serial 3 aU DAR Full featured UART 38 RIB3 I 4 5 1 39 TXD3 O 40 DTR3 O 4 RTS3 O 42 RXDI I 43 TXDI O Serial 1 44 CTS I Bluetooth UART 4 5 1 45 RTSI O are 5 Serial 2 Infrared 4 5 1 48 POE 49 PWE 50 PIOR 51 PIOW De PCMCIA CF Card interface 54 PSKTSEL 55 PREG 56 PWAIT 57 IOIS16 58 LDDO O 59 LDDI O 60 LDD2 O 61 LDD3 O 62 LDD4 O 63 LDD5 O 64 LDD6 O a LED f LCD display 4 8 67 LDD9 O 68 LDD10 O 69 LDD11 O 70 LDDI2 O 71 LDD
72. stems ADS cannot provide meaningful system level emissions test results The crystal frequencies section 6 4 15 and electrical specifications listed in Chapter 6 may provide helpful information for agency certifications Protecting the Power Supply Inputs It is the responsibility of the designer or integrator to provide surge protection on the input power lines This is especially important if the power supply wires will be subject to EMI RFI or ESD ADS document 110116 10012 Appliedda Embedded Computer Systems ta net 5 Power and Power Management 5 1 5 1 1 5 1 2 This chapter describes the architecture of the GCX power supply factors affecting power consumption and reference designs to get you started For information about how much power the GCX consumes consult the electrical specifications in section 6 4 2 Power Management Modes This section describes the various power management modes of the XScale processor and how the GCX makes use of them XScale Power Management Modes The XScale PXA255 processor supports four operational modes Turbo Run Idle and Sleep e Sleep mode uses the least amount of electrical power The processor core is powered off and only a few processor peripherals RTC 1 Os and interrupt control remain active The transition back to Run mode may take a few hundred milliseconds as clocks must stabilize and hardware that was powered off must be reinitialized e Idle mode reduces p
73. system must configure the processor for the target serial mode The table below lists the standard voltages to expect on the transmit line of the port when the transmitter is idle Important When using Serial 2 as IrDA make sure that the operating system configures the port as IrDA Otherwise the transmitter may be enabled continuously which can drain significant amounts of power and may overheat and damage the IrDA transmitter Serial 2 Mode Jumper Settings Resulting Circuit Tx Viae 12 3 4 a 3 3V ElA 232 5 6 7 8 EIA TIA 232 9 10 le i 6 V 15 16 17 18 STS cls 23 24 RTS RTS CPU 33V header e a 1 3 5 7 eX are 3 3 V logic 13 14 i n 3 3 V 21 22 ers 5l crs RTS RTS CPU 3 3V RX Ej 2 b IrDA E 1 xj Es E OV 9 20 cts El rts 1 3 3 7 JP8 11 JP14 15 Serial Port 1 Mode Select Type 3 post headers 2mm Location on board B2 C2 Serial port 1 can be field configured for operation in RS 232 RS 422 and RS 485 modes It can also be factory configured for J1708 or 3 3 V logic operation for volume production orders see section 6 2 for details Jumpers JP6 JP7 and JP10 through JP13 select between RS 232 and RS 485 422 mode and set the duplex mode of RS 485 422 RS 422 and RS 485 are differential serial protocols with the same voltage characteristics RS 422 is a point to point protocol while RS 485 turns off the transmitter when not in use allowing multi ADS document 110116 10012 Page 13 GOX User s Manua
74. systems include the Sharp LQ64D343 5V TFT VGA display which draws about 1 W and the Taiyo Yuden LS520 backlight inverter which draws about 6 W at full intensity Symbol Parameter Min Typ Max Units I sleep Sleep mode current note 4 7 5 mA P idle Idle mode power note 5 1 6 Ww P run Run mode power note 6 2 1 3 W Notes Power consumption was measured on a fully populated 64 MiB GCX with no peripheral connections under the following conditions 4 System in Sleep mode Vsleep 5 0V JP5 3 3 4 5 System running only the Windows CE desktop predominantly in Idle mode lt 5 CPU utilization 6 Typical measurement indicates full utilization 95 100 of processor core achieved by running multiple instances of a graphical application under Windows CE ADS document ff 110116 10012 Applieddata net Embedded Computer Systems System Specifications 6 4 3 Sleep and Wakeup The GCX supports a low power Sleep mode that is triggered by software from a power fault or with the RgOnOff Wake the GCX by shorting the RgOnOff signal to ground Symbol Parameter Min Typ Max Units Sleep 5 2 2 Vsleep Sleep trigger voltage Note 7 4 5 V Sleep trigger release hysteresis Vsleep hyst Note 8 0 06 0 25 V Wakeup RqOnOff 5 2 3 trq wakeup pulse duration Note 9 100 ms Vprq pull up voltage Vddx V Rprq pull up resistance 47 kQ Vih max maximum inp
75. the switches jumper settings connectors and connector pinouts 3 1 Identifying Connectors The section describes how to locate connectors on the board and how to determine how each header is numbered 3 1 1 Locating Connectors The following diagram illustrates the location of key components on the GCX For example the PS 2 socket is located in square A2 and the reset button is in D5 Component listings elsewhere in this chapter refer to this diagram go J16 J516 J17 oi Y J19 D3 D2 D1 O00 Figure 2 GCX Connector Locator 3 1 2 Determining Pin Numbers The pins of headers and connectors on ADS products are numbered sequentially Double row headers place even pins on one side and odd pins EHUN on the other The diagram at right indicates how pins are numbered as seen from the component side of the board The component side of the GCX is the one on which the PCMCIA ejector is installed As a factory option some through hole connectors may be installed on the bottom side of the GCX ADS document ff 110116 10012 Page 9 Applieddata net GCX User s Manual Embedded Computer Systems 3 2 3 2 1 3 2 2 3 2 3 Page 10 To locate pin 1 of a connector or jumper try the following 1 Look for a visible number or marking on the board that indicates connector pin numbering A notch or dot usually indicates pin 1 2 Look at the underside of the board The sguare pad is pin 1 3 Downl
76. tion aida da Fy dda CY YDW ona cuba Y al A ydd nel 1 1 1 COVE VI iio 1 12 NT 1 II O uo Y uu Yn NO 1 1 2 2 Power Supply ee ANN 1 1 23 Memory ue eiu ynn y ies ne a eee Y SN 1 12 4 CommunicaUoniss ee dn A YN yn GT SW with Y te ema 1 1 23 Userintertace and Display iio ii y aes 2 12 0 Discreto MO ici tt ti a A dt 2 AA e O 2 1 3 Block Diaria 3 2 Getting Started ida a lie 5 2 1 Development Systems iia dai iia aa 5 2 11 System Components iii ri ao 5 2 2 Frequently Asked Questions eniris ie en nnno nano nn nonn conan ona rro EEEE 3 2 3 Organization of this Manual toco colina loto da habla 6 2 4 Errata Addenda and Further Information eeeuu ueu II III LIII III I I LLI rara ra rana 7 3 Hardware Referen eva uu a e tt ddw tees ees eat 9 3 1 AN AA S EG eee FYR IL FFAEL GR FDYR YNE YNO RADAR LY FI E E as 9 Zl Locating Connector ua oa toi 9 3 1 2 Determining Pin Numbers soii een i is aan 9 3 2 Switches Controls and Indicators cccconoooooonnncnonononancnonoconnnnnnnnnnncononnnnnnnnonccconnnnnnnnnnccnnnnns 10 32 1 Sl DIS Ml tati tia 10 32 2 O NL Reset WC io 10 323 LED nidic torsss eu Wy YN NG A YN E R NY setae 10 Software Controllable LEDs Ethernet LEDs 3 24 DA D T RE A EAEE R E E Y Rae es 11 3 25 VR1 Vee Contrast Adjustment factory Option oconoccnocnonnconnnonnnononanonnonnnonanonanonncnno 11 3 2 6 VR2 Vcon Contrast Adjustment factory option essessssseesesrserssrsresresrrsresresresr
77. tion and electrical and mechanical interface specifications Specifications Electrical and mechanical interface specifications To locate the information you need try the following 1 Browse the Table of Contents Section titles include connector designators and their function 2 Follow cross references between sections 3 View and search this manual in PDF format ADS document ff 110116 10012 Embedded Computer Systems Applieddata net Getting Started 2 4 Errata Addenda and Further Information Errata and addenda to this manual are posted on the ADS support forums along with the latest release of the manual Consult the support forums any time you need further information or feel information in this manual is in error You may access the forums from the ADS support site http www applieddata net support In addition to manuals the support forums include downloads troubleshooting guides operating system updates and answers to hundreds of guestions about developing applications for ADS products You may also post guestions you have about ADS products on the forums ADS document ff 110116 10012 Page 7 Applieddata net GCX User s Manual Embedded Computer Systems This page intentionally blank Page 8 ADS document 110116 10012 Applieddata net Embedded Computer Systems 3 Hardware Reference This section gives an overview of the hardware features of the GCX This overview includes a description of
78. tor Boot ROM Standard GCX systems boot from the system flash However some applications e g the gaming industry require a removable boot ROM Five Wire Touch Panel Controller Standard GCX systems are built with four wire touch panel controllers GCX systems can be built for use with five wire touch panels Display Support While the GCX can support many displays without modification ADS may need to tune the GCX to support the LCD you have chosen for your application ADS may have to produce the AGX with one ore more of the following changes e _ 5 V Display Data Buffers Standard systems use 3 3 V buffers on the display data lines Some LCD displays reguire a higher data voltage for reliable operation e Different Backlight Control Voltage The backlight PWM voltage can be set to 3 3 V 5 V or to Vbacklight In addition the filter capacitor on the PWM output can be removed See specifications section 6 4 4 and Note 17 for added details e _ Vcon or Vee Power Supply Passive displays have varying voltage requirements ADS can populate the Vee or Vcon circuits to match your display You may also choose to configure the board for manual control of Vee or Vcon ADS document ff 110116 10012 Applieddat Embedded Computer Systems Syste m Specificatio ns 6 3 a net Remove 3 3V Regulator For cost sensitive applications the 3 3 V regulator can be removed JP6 must be set to use an external 3 3V supply Serial 1 J170
79. ut voltage 3 3 V Vil trigger voltage 0 9 V Notes 7 This is the voltage of VPERM selected by JP5 at which the DC_GOOD signal 4 3 6 changes from high to low which can trigger the system to go into Sleep mode DC GOOD is connected to the system controller 8 Important Once Vsleep has been triggered the input voltage must rise at least Vsleep hyst above Vsleep before the voltage detector will restore the DC_GOOD signal Make sure that your input voltage is designed to always run above Vsleep Vsleep hyst or systems that go to sleep may not be able to wake again 9 Short RgOnOff to GND to for at least trg to wake up system A low level voltage on RgOnOff initiates wakeup ADS document 110116 10012 Page 51 GOX User s Manual Applieddata net Embedded Computer Systems 6 4 4 Display LCD display panels have a wide range of voltage and data reguirements The GCX has a number of adjustable voltages to support these reguirements as well as controls for brightness backlight and contrast passive panels only See section 4 8 for further details Standard production GCXs use the PXA255 s graphics controller Symbol Parameter Min Typ Max Units LCD 4 8 2 Pnl_pwr LCD voltage note 10 3 3 5 0 V P pnl_pwr LCD power note 11 2 W V pnl data LCD data voltage note 12 3 3 3 3 5 0 V Scan Direction active displays 3 3 2 3 3 3
80. yboard data 2 n c 3 GND P ground 4 VCC PO 5 V fused at 350mA 5 CLKPS2 IO PS 2 keyboard clock 6 n c shield case connected to board mounting holes 5 The onboard 3 3V regulator can be removed in cost sensitive applications This option is available for only volume production orders see 6 2 ADS document ff 110116 10012 Page 19 GOX User s Manual 3 4 6 Page 20 Applieddata net Embedded Computer Systems J7 ADSmartlO Serial 1 and 2 ElA 422 485 I O Board Connector 2x20 header 2 mm spacing Samtec STMM 120 02 G D Recommended Mating Cable Samtec TCSD Series Recommended Board to Board Connector Samtec ESOT series e g ESOT 120 02 F D 500 Location on board C1 D1 Pin Name Pin Type Description 1 ROWO IO PC7 3 ROWI IO PC6 5 ROW2 IO PCS Z ROWS JO ED eis o VO 9 ROW4 IO PC3 43 11 ROWS IO PC2 13 ROW6 IO PCI 15 ROW7 IO PCO RXD2 2 I TXD2 4 O CTS2 6 I Serial 2 EIA 232 4 5 1 RTS2 8 O GNDCOM2 10 P RXDI 12 I TXDI 14 O CTS 16 I Serial 1 EIA 232 4 5 1 RTS 18 O GNDCOMI1 20 P 17 COLO IO PAO 19 COLI IO PAI 21 COL2 IO PA2 as GOLF 10 PAU Keypad ie ae 1 Os 25 COLA IO PA4 or AIDS 43 27 COLS IO PA5 29 COL6 IO PA6 31 COL7 IO PA7 RX422 22 I RX422 24 I TX422 26 O Serial 1 EIA 422 485 4 5 1 TX422 28 O

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