Imote2 Hardware Reference Manual
Contents
1. Logical NAND of LIGHT INT and B2 O PERAD ANALOG INT Note1 2 FF CTS Serial Data for SHT15 B4 FF RTS Serial Clock for SHT15 B5 BT RXD An alternative connection to B1 B6 An alternative connection to B2 GND X Ground Do not connect B20 SSP1SFRM SPLCS SPlchipselect 4 Bet SSPiTXD SDA SDLSDO SPI serial data input for accelerometer B22 O SSPIRXD SDO SPI serial data output for accelerometer Bas GRIO10 Notusedby the sensorbora ma em Gee BEN mmek Notusedby the sensorboard Bm MMCMD Notusdbythesenorboard BN MM_DATAO Notusedby the sensorboard MM DATA1 Not used by the sensor board Bas MMDATA2 Notusdbythesenrboad 830 MMDATAS Notused bythe sensorbord B3 GROS Not used by the sensor board Table 7 5 ITS400 Pin out description J5 Analog Sensor Interface Connector Pin Type Name Description O e av av Gemd s vo ecse ccon 7 5 Hardware Errata Board Rev 2 0 U7 TMP175 TEMP ALERT signal requires a 10Kohm pull up to 3V It s missing in the current revision U2 TSL2561 LIGHT INT signal requires a 10Kohm pull up to 3V It s missing in the current revision Doc 7430 0409 01 Rev A Page 21 Crossb w Imote2 Hardware Reference Manual 8 11B2400 Interface Board The IIB2400 interface board is us2. I O BB_IB_DATA1 O BB_IB_DATA2 1 0 BB_IB_ WAIT MSL wait indicator for inbound link CIF LV Quick capture line start m 9 WO USBH N CONN Data negative differential signal USB D USBH P CONN Data positive differential signal USB D AC97 BITCLK AC97 12 288 MHz bit rate clock AC97 SDATA IN O AC97 Serial audio input data from CODEC AC97 SDATA OUT AC97 Serial audio output data to CODEC AC97 SYNC AC97 48 KHz frame indicator and synchronizer 15 VO l28 SYSCLK 113 125 system clock BITCLK x 4 AC97 RESET n AC97 CODEC reset 16 GND Ground i O 17 WO FERTS 98 UARTtrequesttosend 19 lO FETXD 99 UARTtsenddata 0 20 I O FF RXD 96 UART 1 receive data CIF DDO Quick capture data line 0 CIF DD5 Quick capture data line 5 CIF DD3 Quick capture data line 3 Page 14 Doc 7430 0409 01 Rev A GND Imote2 Hardware Reference Manual Crossb w CIF DD2 Quick capture data line 2 CIF DD4 Quick capture data line 4 Quick capture programmable output clock CIF M LK 9 27 lO BB OB WAIT MSL wait indicator for outbound link CIF PCLK Quick capture pixel clock 28 GND O GND 33 QGND Grou 38 I O SSP1 SCLK 23 Synchronous Serial Port 1 clock I2C serial clock Table 6 5 Pin out description for advanced small connector J3 GPIOH Description JTAG port Test Reset 1 JTAG port Test
3. Nearson http www nearson com Page 8 Doc 7430 0409 01 Rev A Crossb w Imote2 Hardware Reference Manual 5 Power 5 1 Power Supply Options To supply the processor with all the required voltage domains the Imote2 includes a Power Management IC This PMIC supplies 9 voltage domains to the processor in addition to the Dynamic Voltage Scaling capability It also includes a battery charging option and battery voltage monitoring Two of the PMIC voltage regulators 1 8 V amp 3 0 V are used to supply the sensor boards with the desired regulated supplies at a maximum current of 200 mA The processor communicates with the PMIC over a dedicated I2C bus PWRI2C The Imote2 platform was designed to support primary and rechargeable battery options as described below in addition to being powered via USB The following figure shows how the different battery boards and on board connectors can be used to power the mote 5 1 1 Primary Battery The Imote2 platform can be powered using primary batteries with a voltage range of 3 2 4 5 V e g 3 AAA alkaline batteries A battery board with a basic or advanced set of connectors can be connected to the Vbat pins of the connector As shown in the figure below a diode and fuse should be connected between the battery and mote board to protect the battery and the PMIC 5 1 2 Rechargeable Battery A rechargeable battery can be used to supply power to the Imote2 platform by connecting it directly to
4. Part 40 pin Advanced J4 DF15B 1 8 40DS 0 65V 50 20 pin Advanced J2 DF15B 1 8 20DS 0 65V 50 Doc 7430 0409 01 Rev A Page 23 Crossb w Imote2 Hardware Reference Manual 9 Appendix A Warranty and Support I nformation 9 1 Customer Service As a Crossbow Technology customer you have access to product support services which include e Single point return service e Web based support service e Same day troubleshooting assistance e Worldwide Crossbow representation e Onsite and factory training available e Preventative maintenance and repair programs e Installation assistance available 9 2 Contact Directory United States Phone 1 408 965 3300 8 AM to 5 PM PST Fax 1 408 324 4840 24 hours Email techsupport xbow com Non U S refer to website www xbow com 9 3 Return Procedure 9 3 1 Authorization Before returning any equipment please contact Crossbow to obtain a Returned Material Authorization number RMA Be ready to provide the following information when requesting a RMA e Name e Address e Telephone Fax Email e Equipment Model Number e Equipment Serial Number e Installation Date e Failure Date e Fault Description Page 24 Doc 7430 0409 01 Rev A Imote2 Hardware Reference Manual Crossb w 9 3 2 Identification and Protection If the equipment is to be shipped to Crossbow for service or repair please attach a tag TO THE EQUIPMENT as well as the shipping container s
5. consists of 2 physical connectors from the Hirose DF9 family which has al mm pitch The connector choice simplifies the routing and soldering of sensor boards which is useful in the prototyping stage The pins are split between the 2 connectors 31 pin and 21 pin connectors for mechanical stability reasons The asymmetry of the two connectors provides a useful visual clue of sensor board orientation All I O pins can be programmed as GPIOs in addition to their special port function As mentioned in the power supply section the 1 8 and 3 0 Doc 7430 0409 01 Rev A Page 11 Crossb w Imote2 Hardware Reference Manual V pins are supplied by the PMIC and can be used to power the sensor boards The alarm pin is an input pin and can be used by the sensor boards to wake up the processor out of deep sleep mode if needed The reset pin is an input pin to force a hardware reset of the processor The standard UART will be used as the debug console and 1s exposed on the 21 pin connector The 3 pin connector exposes 2 high speed UART ports 2 SSP ports an SDIO port an I2C port and multiple GPIOs There are 11 reserved pins to allow for future expansion and inter board communication Bon VBAT q I2C VBAT Pen GND SSPCLK PMIC_TBAT SSPFRM SPI 1 SSPTXD Se Future Reserved SSPRxD 1 8 V 3 0 V Reserved Alarm Reset GND VRTC nCHARGE EN STD RD rota STD TxD id GPIO ipsis GND eserved Reserved MMCLK Reserved MMCM
6. special port function JTAG is exposed on the 20 pin connector The MSL interface provides two independent high speed unidirectional links The data channel width can be scaled from 1 to 4 bits providing up to 192 Mbps at 48 MHz The CIF port supports the Intel Quick Capture Camera Interface to easily attach 1mage sensors to the Imote2 Note that the IC UART and SPI ports exposed on the 40 pin connector are the same ports exposed on the basic side Doc 7430 0409 01 Rev A Page 13 Crossb w BB IB DATAO BB IB DATA1 BB IB DATA2 21b BB OB DATAO BB OB DATA1 BB OB DATA2 Imote2 Hardware Reference Manual BB IB DATA3 BB OB DATA3 BB OB CLK nTRST BB IB STB BB OB STB TCK BEIB WAN BB OB WAIT TMS GND GND TDO Vals USBH N CIF DD9 TDI n USBH P CIF DD8 PMIC TBAT I28 BITCLK CIF DD7 GND d I28 DATAIN CIF DD6 VBAT q I28 DATAOUT GND I28 SYNC GPIO I25 SYSCLK SSPRxD GND SSPTxD FFRTS SSPFRM FFCTS SSPCLK FFTXD o me FFRXD D SCL STD TxD STD STD RxD f Uart nCHARGE EN 1 2 3 4 5 6 7 8 I2S or AC97 o Hirose DF15 FF UART Hirose DF15 Table 6 4 Pin out description for advanced large connector J4 GPIO Description MSL inbound data bit 0 Quick capture data line 5 Quick capture data line 1 82 BB IB CLK 83 MSL inbound clock strobe CIF DD4 Quick capture data line 4 VO BB IB STB 84 MSL inbound signal qualifier CIF FV Quick capture frame start e DO Pin Type Name BB IB DATAO CIF DD5
7. 1 Photos of the Imote2 Board C GPIOs 802 15 4 O 2x SPI ay C 3x UART PC SDIO USB host USB client AC 97 256kB SRAM Camera PS Power management Supply Battery charger Figure 2 2 Imote2 Block diagram Page 4 Doc 7430 0409 01 Rev A Imote2 Hardware Reference Manual Crossb w 2 1 Features PXA271 XScale processor 13 416 MHz Wireless MMX coprocessor 256kB SRAM 32MB FLASH 32MB SDRAM Integrated 802 15 4 radio support for external radios through SDIO and UART Integrated 2 4GHz antenna Multicolor status indicator LED Basic and advanced expansion connectors supporting 3xUART PC 2xSPI SDIO I2S ACO97 USB host Camera I F GPIO Mini USB port for direct PC connection e Size 48 mm x 36 mm PCB Thickness 1 75 mm Table 2 1 Imote2 Operating Specifications 2 2 Mechanical Dimensions 11mm 24mm 24mm 11mm Antenna 36mm Antenna 36 keep ol m fee kopou rrr I L 48mm 48mm Figure 2 3 Mechanical Outline Drawing of OEM Edition Module Doc 7430 0409 01 Rev A Page 5 Crossb w Imote2 Hardware Reference Manual 3 Processor The Imote2 contains the PXA271 processor This processor can operate in a low voltage 0 85V and a low frequency 13 MHz mode hence enabling low power operation The frequency can be scaled to 104 MHz at the lowest voltage level and can be increased up to 416MHz with Dynamic Voltage Scaling The processor has ma
8. D MMDO Pd Hirose DF9 MMD3 gt GPIO o NOO A O N 1 2 3 4 5 6 7 8 v O Y v v v v Y J 2 O Reserved Reserved Reserved Hirose DF9 Table 6 2 Pin out description for basic large connector J7 Pin Type Name GPIO Description 1 1 1 1 VO FFRXD 96 UART1ireceivedata 0000000000000 2 VO FE TXD 99 UARTisenddata 4 4 VO FFRIS 98 UART1trequesttosend 0 0 a UART 2 send data 8 VO BT RTS 45 UART2requesttosend 1 9 QGND Grou o O 10 I O SSP2 SCLK 36 Synchronous Serial Port 2 clock 14 I O GPIO94 94 General purpose I O 15 R Reserved Donotconnect gt gt 16 R Reserved Donotconnect 4 SSP1 SCLK Synchronous Serial Port 1 clock 23 I O 10 General purpose I O 24 END Ground A AJ OO Page 12 Doc if 7430 0409 01 Rev A Imote2 Hardware Reference Manual Crossb w MM CMD MMC and SD SDIO command 27 I O MM DATO 92 MMC and SD SDIO read write data 0 29 I O MM DAT2 110 MMC chip select 0 or SD SDIO read write data 2 31 I O GPIO93 93 General purpose I O Table 6 3 Pin out description for basic small connector J5 Pin Type Name GPIO Description BEBE EBENE VBAT Power Supply Rail 3 2 4 7 V minus Diode Drop mE M REI VBAT Power Supply Rail 3 2 4 7 V minus Diode Drop 3 3 HM OND O E AA 4 PMIC_TBAT Batt
9. Expansion Connectors 6 1 Sensor Board Interfaces The Imote2 platform exposes two sets of connectors the basic set and the advanced set The pins on each connector set are split into two physical connectors to enhance the mechanical stability The basic set is meant to enable low cost sensor boards low density connectors were chosen and support the most common sensor interfaces This connector set is defined as the architectural set and can be supported in future mote designs The advanced connector set exposes some of the PXA271 advanced features Camera Interface High speed bus Audio interfaces etc and 1s assumed to be platform specific The details of the connector sets are described below J4 20 1 40 21 Hirose DF15B 40DS 0 65V Top Bottom 174 Hirose DF9 31P 1V Hirose DF15 20DS 0 65V 10 1 20 11 J3 Hirose DF9 21P 1V 21 12 Figure 6 1 Connector information for Imote2 Table 6 1 Matching connector information Description Manufacturer Par DF15B 3 2 40DP 0 65V 20 pin J3 DF15B 3 2 20DP 0 65V 1 pin 1 NOTE The Hirose DF15 connector type comes in wide variety of stacking heights Using the recommended part numbers will result in a 5mm stacking height on the bottom side If desired an expansion board designer can choose a different part number of the DF15 connector used in order to meet custom stacking height requirements 6 1 1 Basic Connector Set The basic connector set
10. I2C either of which is selectable using 0 ohm resistors including on the board To communicate with the sensor using the I2C interface populate R17 and remove R21 To communicate with the sensor using SPI populate R21 and remove R17 By default the sensor is connected to SSP1 on the Intel Mote 2 In the event that another stacked board conflicts with the basic sensor board use of SSP1 the sensor may be disconnected from the port by removing R23 R24 R25 and R26 and connected to SSP2 instead by populating R29 R30 R31 R32 with zero ohm resistors The sensor s data ready RDY INT interrupt is connected to GPIO96 through an OR gate as shown in the schematic below If another board conflicts with the use of GPIO 96 the BT RXD pin can be used instead by loading R34 For more info on this sensor the datasheet can be found at http www stmicro fr stonline products literature ds 10175 pdf 2 LIGHT INT PIO 99 FF TXD 2 ANALOG INT NC7S00 SOT23 2 RDY INT gt x GPIO 96 FF RXD 2 TEMP ALERT NC7SZ732 350T23 7 1 2 Temperature and Humidity Sensor The boards include a Sensirion SHT 15 sensor which can be used for applications requiring high accuracy temp reading 0 3 degC and humidity This sensor interfaces to the Intel Mote 2 through two GPIO pins The data pin of the SHT11 is connected to GPIO 100 whereas the clock pin is connected to GPIO 98 Another set of connections is available by loading R36 and R37 if no conflict ex
11. Imote2 Hardware Reference Manual Revision September 2007 PN 7430 0409 01 www xbow com O 2007 Crossbow Technology Inc All rights reserved Information in this document is subject to change without notice Crossbow IRIS MICA TrueMesh and XMesh are trademarks of Crossbow Technology Inc Other product and trade names are trademarks or registered trademarks of their respective holders Imote2 Hardware Reference Manual Crossb w Table of Contents nitus 3 2 Imote2 Radio Processor Board IPR2400 eee e eee e eee ee eee eee eee ee sees eee sees eee 4 PX MEME UN RUE motn c 5 2 2 Mechanical DIMENSIONS cue et Oa oa dte Ge t bn uer im tu eu ed tubes MET 5 Process 6 R dios and Antenna R H 7 FL R ds 7 S MM SUE UU LIN EE ER 8 S Prva 9 PE NNN ON Ne 9 6 Sensor Boards amp Expansion Connectors e eee eee eee eee eee ee eee eee sete eese esses eee eese 11 ol Sensor Board Interfaces ateo tii 11 T 115400 Basic Sensor DOT t RR 17 o a r r e S 17 EZ Boostswicherand Linear ReouldtOt secs sitas 19 To Communication and Addressin o Verse 19 P PEO DE SIUE S A 20 dy Hardware Errata Board Rev Nasse 21 5 1B2400 Interface Doa dica 22 S I Counector Descrip Ree 23 9 Appendix A Warranty and Support Information c ecce eee eee eee e eee ee eee Se 24 ENN 24 VZ PENN PP 24 OD ReumPoedre saa 24 JOSE SEERNE 25 Doc 7430 0409 01 Rev A Pag
12. SID RXD TP Pwr scr meg PWR SDA TP15 SYS EN TP16 NVDD FAULT TP17 NBATT FAULT Page 16 Doc if 7430 0409 01 Rev A Crossb w Imote2 Hardware Reference Manual 7 1TS400 Basic Sensor Board The basic sensor board is designed to connect to the basic connectors on the Imote2 It contains a 3d Accelerometer advanced temp humidity sensor light sensor and 4 channel A D It is a pass through board to allow stacking with another sensor communication board Humidity 3D Power Temperature Acceleration regulator 10129uuoo EuJ9 X3 Figure 7 2 ITS400 Block diagram Table 7 1 ITS400 Operating Specifications Operating Value Operating temperature range 0 to 70 C Storage temperature range 40 to 150 C Humidity non condensing T 1 Sensor Suite The ITS400 sensor board is multi sensor board that combines a popular set of sensors for wireless sensor network applications including Doc 7430 0409 01 Rev A Page 17 Crossb w Imote2 Hardware Reference Manual ST Micro LIS3LO2DQ 3d 12 bit 2g accelerometer High Accuracy 0 3 C Sensirion SHT 15 temperature humidity sensor TAOS TSL2651Light Sensor Maxim MAX1363 4 Channel General Purpose A D for quick prototyping TI Tmp175 Digital Temperature Sensor with two wire interface 7 11 3D Accelerometer This board includes an ST Micro LIS3LO2DQ 3d accelerometer This sensor has a range of 2g with 12 bit resolution It offers two possible interfaces SPI or
13. clock JTAG port Test mode select JTAG port Test data out JTAG port Test data in N JTAG NTRST EE p E E Oo i Lp ES PMICTBAT Battery temperature input ESA ss ES EA E EA E Ep a JTAG_TCK 1 JTAG TMS ame 7 Ground Power Supply Rail 3 2 4 7 V minus Diode Drop Power Supply Rail 3 2 4 7 V minus Diode Drop Power Supply Rail 3 2 4 7 V minus Diode Drop UART 3 receive data 12 O STDTXD UART3senddata o O FEE nCHARGE EN mn sid select 0 rechargeable battery 1 primary 14 VCCBAT RTC Power supply for the RTC voltage domain of the CPU 15 GND Ground O 16 O NRESET X Processorreset 07 I ALARM Alarm input to PMIC see power subsystem 18 VOC5V 5 0V supply rail to power sensor board USBH i VCC 3V 3 0 V supply rail to power sensor boards 9 HS 20 VOC 1P8 1 8 V supply rail to power sensor boards ae PN 10 Table 6 6 Imote2 Internal I O configuration Component Pinmame GPIOF ED Re 1 Doc 7430 0409 01 Rev A Page 15 Crossb w Imote2 Hardware Reference Manual Hop 9 CC2420 RESETN uM um CC2420 Table 6 7 Imote2 Test Points Test Point Name Signal gt PR PWR pad for direct battery connection PA GND pad for direct battery connection TP5 STD TXD TP6
14. e 1 Crossb w Imote2 Hardware Reference Manual About This Document The following annotations have been used to provide additional information 4 NOTE Note provides additional information about the topic M EXAMPLE Examples are given throughout the manual to help the reader understand the terminology gt IMPORTANT This symbol defines items that have significant meaning to the user N WARNING The user should pay particular attention to this symbol It means there 1s a chance that physical harm could happen to either the person or the equipment The following paragraph heading formatting is used in this manual 1 Heading 1 1 1 Heading 2 1 1 1 Heading 3 This document also uses different body text fonts listed in Table 0 1 to help you distinguish between names of files commands to be typed and output coming from the computer Table 0 1 Font types used in this document Font Type Usage Sample code and screen output Courier New Bold Commands to be typed by the user Times New Roman Italic TinyOS files names directory names Franklin Medium Condensed Text labels in GUIs Page 2 Doc if 7430 0409 01 Rev A Crossb w Imote2 Hardware Reference Manual 1 Introduction This User s Manual describes the hardware features of the Imote2 Processor Radio IPR2400 board and basic sensor board ITS400 Table 1 1 below lists the models covered in this Manual Table 1 1 Imote2 Models covered in the Refe
15. e interrupt line ANALOG INT is connected to GPIO99 through a NAND gate as shown in schematic above If another board conflicts with the use of GPIO 99 the BT TXD pin can be used instead by loading R35 The datasheet can be found at http pdfserv maxim ic com en ds MAX 1363 MAX1364 pdf 7 1 5 Digital Temperature Sensor with two wire interface The board includes a TI TMP175 a digital temperature sensor with a two wire output serial interface The device is capable of a 1 5 C accurate over the range of 25 C to 85 C The sensor allows up to 27 I2C devices on the bus TMP175 address can be configured via resistors R13 R14 R15 R16 R27 R28 See schematic and TMP175 datasheet for more details The interrupt line TEMP ALERT is connected to GPIO96 FF_TXD as shown in the schematic above The datasheet for the device can be found at http focus ti com lit ds symlink tmp175 pdf 7 2 Boost Switcher and Linear Regulator The board includes a switching voltage regulator U1 1 LTC3426 followed by linear regulator U12 LTC1962 The input to the boost regulator 1s provided from the battery In order to provide a cleaner power supply the output of the switcher is regulated further with a linear regulator Regulated voltage output is provided externally through the connector J5 pin 5 It could be used for prototyping purposes in the case where a user of the board requires a voltage that is higher than anything provided by the board All boards are ship
16. ed for code loading and debugging through JTAG It connects to the Imote2 through the advanced connectors and is a pass through board to enable debugging with other power battery boards attached to the Imote2 Figure 8 1 Photo of the IIB2400 Interface Board Switching Fabric Xilinx XC2C64 Dual Port CPLD FTDI Chip Program Switch NITE 998J1914 9V LP Imote2 Advanced Connector Figure 8 2 ITS400 Block diagram It contains a dual port FTDI chip mapping the USB input to 2 serial ports The first serial port connects to the STDUART on the Imote2 platform and is meant to be used for the console The second serial port can be configured to connect to FFUART regular FFUART crossover I2C or Page 22 Doc if 7430 0409 01 Rev A Crossb w Imote2 Hardware Reference Manual SSPI ports This mapping is controlled by the SW5 switch on the board and is labeled accordingly The power supply can be controlled by the SW6 switch to select on of the following options e Option I USB power drives VBAT to power the mote marked as PWR e Option 2 VBAT is not driven marked as No PWR The debug board is designed to work with both the Intel JTAG dongle and the Macgraigor Raven dongle It provides the ability to program the mote as well as the on board CPLD through JT AG The desired JTAG chain is selected via the SW3 switch 8 1 Connector Description Table 8 1 Connector information Description Manufacturer
17. ery temperature input 5 USBH 5V 15 0 V supply rail to power sensor board USBH 6 R Reserved Do not connect 7 R Reserved X Donotconneet 4 8 R Reserved Donotconnect gt gt 9 R NC Available for communication between expansion boards 10 R NC Available for communication between expansion boards 11 R NC Available for communication between expansion boards 12 VCC 1P8 18Vsupplyraillto power sensor boards Cd 13 VvCC3V 13 0 Vsupplyrailto power sensor boards 14 H Heserved Do not connect 15 ALARM Alarm input to PMIC see power subsystem 16 O NRESET Processorreset o 1 O 17 GND Ground 18 VCC RTC Power supply for the RTC voltage domain ofthe PXA 19 nCHARGE EN J Battery select 0 rechargeable battery 1 primary battery STD RXD UART 3 receive data STD TXD UART 3 send data 6 1 2 Advanced Connector Set The advanced connector set also consists of 2 physical connectors We chose a higher density connector 0 65mm pitch for the advanced set to be able to support the large pin count required without increasing the size of the connector too much The pins are split on 2 connectors 40 pin and 20 pin connectors for mechanical stability reasons Note that all I O pins with the exception of JTAG and USB can be programmed as GPIOs in addition to their
18. identifying the owner Also indicate the service or repair required the problems encountered and other information considered valuable to the service facility such as the list of information provided to request the RMA number Place the equipment in the original shipping container s making sure there is adequate packing around all sides of the equipment If the original shipping containers were discarded use heavy boxes with adequate padding and protection 9 3 3 Sealing the Container Seal the shipping container s with heavy tape or metal bands strong enough to handle the weight of the equipment and the container 9 3 4 Marking Please write the words FRAGILE DELICATE INSTRUMENT in several places on the outside of the shipping container s In all correspondence please refer to the equipment by the model number the serial number and the RMA number 9 3 5 Return Shipping Address Use the following address for all returned products Crossbow Technology Inc 4145 N First Street San Jose CA 95134 Attn RMA Number XXXXXX 9 4 Warranty The Crossbow product warranty is one year from date of shipment Doc 7430 0409 01 Rev A Page 25 Crossb w Crossbow Technology Inc 4145 N First Street oan Jose CA 95134 Phone 408 965 3300 Fax 408 324 4840 Email info xbow com
19. ists with another stacked board For more information on the SHT1 1 sensor please reference its datasheet located at http www sensirion com images getFile id 25 Page 18 Doc if 7430 0409 01 Rev A Crossb w Imote2 Hardware Reference Manual 7 1 3 Light Sensor The board includes a TAOS TSL2651 light sensor This sensor interfaces to the Intel Mote 2 through the I2C bus The interrupt pin LIGHT INT is connected to GPIO99 through a NAND gate as shown in the schematic above If another board conflicts with the use of GPIO 99 the BT TXD pin can be used instead by loading R35 The address select line is driven by R4 and R6 and is set to 1 by default R4 in R6 out To set it to 0 populate R6 and remove R4 To float it remove both RA and R6 Refer to data sheet for address mapping The data sheet can be found at http www taosinc com product detail asp cateid 4 amp proid 60 7 1 4 General purpose A D The board includes a Maxim MAX1363 4 channel 12 bit resolution general purpose ADC for quick prototyping Each channel supports 0 3 V input signals The ADC interfaces to the Intel Mote 2 through the I2C bus The analog pins are brought out to a Molex PN 39357 0003 connector J5 and the pin assignment is shown below Pin AQ which controls the I2C address of the ADC is driven to 0 by default R7 out R9 in If the I2C address needs to be changed AO can be driven to I as specified in the data sheet by removing R9 and populating R7 Th
20. ny low power modes including sleep and deep sleep modes It also integrates 256 KB of SRAM divided into 4 equal banks of 64 KB The PXA271 is a multi chip module that includes three chips in a single package the processor 32 MB SDRAM and 32 MB of flash The processor integrates many I O options making it extremely flexible in supporting different sensors A Ds radio options etc These I O options include I2C 3 Synchronous Serial Ports one of which dedicated to the radio 3 high speed UARTS GPIOs SDIO USB client and host AC97 and I2S audio codec interfaces fast infrared port PWM Camera Interface and a high speed bus Mobile Scaleable Link The processor also adds many timers and a real time clock The PXA271 also includes a wireless MMX coprocessor to accelerate multimedia operations It adds 30 new media processor instructions support for alignment and video operations and compatibility with Intel MMX and SSE integer instructions Page 6 Doc if 7430 0409 01 Rev A Imote2 Hardware Reference Manual Crossb w 4 Radios and Antenna 4 1 Radio The Imote2 integrates an 802 15 4 radio transceiver from ChipCon CC2420 802 15 4 is an IEEE standard describing the physical amp MAC layers of a low power low range radio aimed at control and monitoring applications The CC2420 supports a 250 kb s data rate with 16 channels in the 2 4 GHz band Other external radio modules such as 802 11 and Bluetooth can be enabled through the supported in
21. o the mote the PMIC will start however it will not start the mote until the power button is pushed similar to a cell phone usage model Doc 7430 0409 01 Rev A Page 9 Crossb w If it is Imote2 Hardware Reference Manual desired to have a power board automatically turn on the mote the power board can short the alarm pin on the connector to the VRTC pin This will cause the mote to start automatically every time power is applied to the mote However if a more intelligent sensor board is desired to start the mote in response to a specific sensor event the alarm pin can be controlled by the sensor board to start wakeup the mote selectively Page 10 Diode forward voltage drop 0 5V gt 1 1V USB min B plug on mote board could be used as powe Pads an mote External Battery only plug as well j board for battery Board Example Primary Battery ower Source USB De Kr LI Plug ay Primary This switch is nr He y controlled by the Y Ta nCHARGE EN Pin an the connectors 3 5 V Max i i i wBATon C Pin Low position 2 PEN Rechargeable battery Connector Pin High gt position 1 Ihold 2 0 5 A Pri batt Ip Primary battery Itrip 1A eee Batterw Yoh bat ES P MIC emal Battery Board Example NN Rechargeable Battery Vchg 4 6V 10V Vbat 3 2V 4 5V Figure 5 1 Power supply options for Imote2 Doc 7430 0409 01 Rev A Imote2 Hardware Reference Manual Crossb w 6 Sensor Boards amp
22. ped with the switcher regulator disabled See schematic and datasheet details on how to enable the switcher and set the voltages on both the switcher and the regulator 7 3 Communication and Addressing The Light Sensor U2 Simple Temp Sensor U7 and general purpose A D U1 can only be accessed via the I2C bus Resistor settings control device addressing Doc 7430 0409 01 Rev A Page 19 Crossb w Imote2 Hardware Reference Manual Table 7 2 ITS400 Default I2C addresses Sensor Address TS2561 U2 1001001 TMP175 U7 1001010 MAX1363 U1 0110100 NOTE Temp Sensor U6 is not I2C compatible and utilizes a proprietary serial communication protocol Please see its datasheet for more information 3D Accelerometer can be configured to communicate over either I2C or SPI serial buses 7 4 Pin out Description B Connectors J5 Analog Sensor Interface Connector GND Alam X Notusedbythesensorboard GND A8 VRTG jNotusdbythesensorboard 1 0 0 0 Af9 nCHARGE EN Notusedbythesensorboard 4 A20 STD RXD Notusedbythesensorboard 4 A21 STDTXD Notusedbythesensorboard 0 Passed through to the bottom connectors J3 amp J4 on the same pins Page 20 Doc if 7430 0409 01 Rev A Imote2 Hardware Reference Manual Crossb w Table 7 4 ITS400 Pin out description Large B connector Pin Type Name Description
23. rence Manual Model Number IPR2400 Imote2 processor radio board ITS400 Imote2 basic sensor board This Manual is not a software guide to programming the Imote2 nor is it a guide to pre built software packages that run on top of the Motes The following resources are available regarding software Imote2 Builder SDK Manual by Crossbow Technology Inc Imote2 Yahoo Users group at http tech groups yahoo com group intel mote2 community Intel Imote2 resources page at http www intel com research sensornets Doc 7430 0409 01 Rev A Page 3 Crossb w Imote2 Hardware Reference Manual 2 Imote2 Radio Processor Board I PR2400 The Crossbow Imote2 is an advanced sensor network node platform designed for demanding wireless sensor network applications requiring high CPU DSP and wireless link performance and reliability The platform is built around Intel s XScale processor PXA271 It integrates an 802 15 4 radio TI CC2420 with an on board antenna It exposes a basic sensor board interface consisting of two connectors on one side of the board and an advanced sensor board interface consisting of two high density connectors on the other side of the board The Imote2 is a modular stackable platform and can be stacked with sensor boards to customize the system to a specific application along with a battery board to supply power to the system TTY A ai s LI a Ta DUXI E Reset Button Figure 2
24. terfaces SDIO UART SPI etc 4 1 1 Radio RF Channel Selection The Imote2 s CC2420 radio can be tuned within the IEEE 802 15 4 channels that are numbered from 11 2 405 GHz to 26 2 480 GHz each separated by 5 MHz 4 1 2 Radio Transmission Power RF transmission power is programmable from 0 dBm 1 mW to 25dBm Lower transmission power can be advantageous by reducing interference and dropping radio power consumption from 17 5 mA at full power to 8 5 mA at lowest power Table 4 1 Chipcon amp CC2420 Output Power Settings and Typical Current Consumption RF Power Power Register Current Consumption dBm code mA 17 4 The RF received signal strength indication RSSI 1s read directly from the CC2420 Radio and sent with every radio packet received Typical RSSI values for a given RF input level are shown in Figure 4 1 below Doc 7430 0409 01 Rev A Page 7 Crossb w Imote2 Hardware Reference Manual RSSI Register Value RF Level dBm Figure 4 1 Typical RSSI value versus input RF level in dBm 4 2 Antenna The Imote2 platform integrates a 2 4 GHz surface mount antenna which provides a nominal range of about 30 meters If a longer range is desired an SMA connector can be soldered directly to the board to connect to an external antenna There are literally hundreds of antenna options offered by different vendors and some references are provided below e Linx Technologies http www linxtechnologies com e
25. the Vbat pin on the connector In this case the PMIC battery charger can be used to recharge the batteries The battery board should drive the nCHARGE EN pin low to connect the USB input to the PMIC charger pin hence allowing to recharge the battery using USB The PMIC supports single cell Li Ion at 4 1 and 4 2 V in addition to a Li Polymer pack See the figure below for more details 5 1 3 Mini USB connector input The mote can be powered directly from USB by routing the USB power to the Vbat input of the PMIC This is the default state when either a battery is not connected or when a battery board drives the nCHARGE EN input high as the case with all primary battery boards If a battery board pulls nCHARGE EN low the USB input gets routed to the Vchg pin of the PMIC which would be the case for rechargeable batteries as mentioned above 5 1 4 On board pads The On board pads can be used to connect a primary battery directly to the mote A diode is included in this path to protect the primary battery In addition these pads can be used to connect any power source supplying a voltage range of 3 2 4 5V after the diode drop This connector is similar to the USB connector functionality as it could be used to supply power to the mote or to recharge a battery based on the state of the nCHARGE EN pin The PMIC is also used to enable the alarm functionality that is exposed on the basic and advanced sensor connectors When power is supplied t
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