LPC2468 OEM Board User`s Guide
Contents
1. CAN Select J34 4positions 2 left CAN 1 2 right CAN 2 RS232 UART J36 8 positions Connect RS232 interface to UART 1 RS232 UART J38 6 positions Connect WLAN interface to UART 1 QVGA Settings See separate description Enable JTAG J24 elect polarity of BUS sense Analog Inputs Copyright 2007 Embedded Artists AB Connect PD to P0 20 AD0 0 P0 23 Connect IRQ to P2 11 VREF output to P2 12 J26 in order from Ethernet PHY NAND Busy USB Device Host DBUS EN left to right J23 in order from top J19 J41 J42 J44 J45 J46 J13 AD0 1 P0 24 to bottom Connect busy To left device CS2 AND DYCSI To right host controls DBUS EN LPC2468 OEM Board User s Guide Page 28 Figure 12 OEM Base Board Basic Jumpers 3 31 Illegal Jumper Combinations Note that some jumpers are mutual exclusive and should not be inserted simultaneously e Jumpers for CAN channel 1 and channel 2 J34 should not be inserted simultaneously e Jumpers for UART channel 1 external RS232 modem J36 and the WLAN add on module J38 should not be inserted simultaneously 3 4 Connectors Figure 13 below illustrate the position of all external connectors on the OEM Base Board Basic Input power Expansion connector J2 000000 000000 000000 disp2. 808 reg 9598 link status full duplex 1 8Mbps lib modules 2 6 5 ucLPC kerne 1 drivers ush gadget 79 file storage ko file_storage gadget File backed Gadget version 26 January 2004 file_storage gadget Number of file_storage gadget lun8 tiie dev anc at Figure 25 Example Terminal Window Startup Message from uClinux Console Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 39 4 4 1 USB Driver Behavior Sometimes the USB COM port does not enumerate properly when the board in connected to the PC This is a known feature of the USB driver If you expertence this problem just unplug the board shortly and then plug in again A new COM port that be accessed properly should be created the second time This problem may occur after every time you start 1 power cycle your If the ISP jumpers are inserted pressing the reset button 15 often required in order to startup the board it can be placed in bootloader mode during startup due to RTS DTR signal handling by the USB driver during startup Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 40 5 CD ROM and Product Registration The accompanying CD ROM contains a complete Linux development environment for uClinux development based VmWare Player technology you can develop for uClinux on your Windows PC Note that there may be patches and newer versio
3. LPC2468 OEM Board User s Guide Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide 59 3 Pas gt pe Pait T E eus E E 1 OO UBAT IN C USA Get Up and Running Quickly and Start Developing Your Applications On Day 1 Embedded Artists EA2 USG 0702 v1 0 Rev B LPC2468 OEM Board User s Guide Page 2 Embedded Artists Ole R mers vag 12 SE 223 70 Lund Sweden info EmbeddedArtists com http www EmbeddedArtists com Copyright 2005 2007 Embedded Artists AB All rights reserved No part of this publication may be reproduced transmitted transcribed stored in a retrieval system or translated into any language or computer language in any form or by any means electronic mechanical magnetic optical chemical manual or otherwise without the prior written permission of Embedded Artists AB Disclaimer Embedded Artists AB makes no representation or warranties with respect to the contents hereof and specifically disclaim any implied warranties or merchantability or fitness for any particular purpose Information in this publication is subject to change without notice and does not represent a commitment on the part of Embedded Artists AB Feedback We appreciate any feedback you may have for improvements on this document Please send your comments to support EmbeddedArtists com Trademarks InfraBed and ESIC
4. Embedded Artists AB LPC2468 OEM Board User s Guide Page 6 electronics in general and with NXP s LPC2xxx microcontroller family in specific Our competence also includes wireless and wired communication for embedded systems For example IEEE802 11b g WLAN Bluetooth ZigBee ISM RF Ethernet CAN RS485 and Fieldbuses 1 3 2 LPC2xxx OEM Education QuickStart Boards and Kits Visit Embedded Artists home page www EmbeddedArtists com for information about other OEM Education QuickStart boards kits or contact your local distributor Copyright 2007 Embedded Artists AB LPC2468 OEM Boar User s Guide 2 LPC2468 OEM Board Design This chapter contains detailed information about the electrical and mechanical design of the LPC2468 OEM Board version 1 1 2 1 LPC2468 OEM Board Schematics v1 1 01 BI LPC2468 CPU 3 T 4 033F 5 5V 100nF BATSOA D BLM18AG6q 15 ut LPC2468 RESET RSTOUT P4 0 AD 2 2 P4 3 A8 PATAT P4 9 A8 10 P4 42 A12 PAASIATS PAISAI 5 15 PAAGIAT6 PAATIAIT PAABIAT8 P4 19A18 P4 20A20 SDA2 SCK1 P4 21 A21 SCL2 SSEL1 P4 22 A22 TXD2MISO1 P4 23 A23IRXD2IMOSI It P4 24 0E P4 25 WE P4 26 BLS0 P4 27 BLS1 P4 28 BLS2 MAT2 0 TXD3 P4 29 BLS3 MAT2 1 RXD3 P4 30 CSO P431 CS1 23 000 P3 1 D1 P3 16 D I amp PWMO VTXD1 P3ATIDATIPWMO 2FRXD1 P
5. Figure 1 LPC2468 OEM Board Schematic v1 1 page 1 C16 c18 C19 100nF 100nF 100nF C20 100nF C22 100nF TITLE LPC2468 OEM Board v1 1 8 Recte al Date 2007 84 83 00 17 06 Sheet 1 5 LPC2468 OEM Board User s Guide 9 2 19945 90 27 00 0 0 2002 9 0 O TTA P4eo8 L30 89 2391 371 401 10 001 d x Lu Jojo euuoo Spr rud gn es EL UH En oN 30001 39001 peog eue preg anuo ge ud ol duo 62 peoga 82 129 scr 1 Ud 0 89019 5 4 RIOD E SOd QSuO NTXH N3AYMNCO3 OSO 33010451031 QvAMd tOXH 1530031 amp QYAMA T OH FOYAHAOOH 05 1145 en ul AHd 101 001 11008264 Joje loso ZHINOS Figure 2 LPC2468 OEM Board Schematic v1 1 page 2 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide 6 32945 90 21 00 66 0 2002 eYeg 148Qunw yu un og 892341 5511 Ip 25 am ain mim PS an LE LZ ano 34001 94001 955 970718001 364 x2239312232 2 d 4444 3418X0 0000 0018X0 1S2 4444 433Vx0 0000 000vX0 HSV14 914g N8Z1 qo MA
6. u boot bootloader or downloading program code into the internal FLASH via ISP functionality USB Connector Automatic ISP jumpers Shorted enable ISP Open disable ISP RX TX jumpers Both jumpers always to the A Hi left 3 e E mu SN 000 MA o Figure 18 Jumper Settings for USB Serial Connection Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 34 Now follow the steps below to get contact with the uClinux console interface of the system 1 Connect the USB cable between the and the LPC2468 OEM board 2 Verify that the power LED on the LPC2468 OEM Board lights 3 Search for the new virtual COM port that is created This can be down from the Device in Windows 4 Make sure the settings of the new COM port is 38400 bps 8N1 8 databits no parity 1 stopbit The COM port number should be a low number preferably below 6 since some terminal programs can only handle COM port number up to 5 5 Mare sure the automatic ISP jumpers are open and that the RX TX jumpers are closed as in the picture above 6 Start a terminal program and connect to the new COM port 7 Press the reset button lower left corner of the OEM Base Board and observe the system console output in the terminal program window 4 3 LAN Ethernet Setup Figure 19 below illustrates how to connect the OEM Base Board to your PC via Ethernet Either directly the red
7. 38400 bits per second 8 data bits none parity 1 stop bit and none flow control as illustrated in Figure 23 below Then select Advanced settings x USB Serial Port COM3 Properties General Port Settings Driver Details its per second Data bits fe x pr Stop bits UART settings Restore Defaults Advanced settings Figure 23 USB Serial Port Properties Dialog Set the desired COM port number under the Advanced settings dialog NXP s FLASH Utility program for ISP program download needs for example a COM port number between 1 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide and 5 Very often the COM port number selected but the USB Serial Port is higher than this so this needs to be changed manually It is common that all COM ports with low numbers are listed as occupied but test to change to a low number anyways Very often it s no problem at all to do this x Advanced Settings for COM3 iJ COM Port COMPorNumber Number Setting USB Transfer Sizes Select lower settings to correct performance problems at low baud rates Select higher settings for faster performance Receive Bytes 4096 Transmit Bytes 4096 BM Options Miscellaneous Options Select lower settings to correct response problems Serial Enumerator Serial Printer Latency Timer msec 16 C
8. All LPC2468 pins available except a few used for Ethernet and USB OTG interface 3 3V only powering e Onboard reset generation e Compact dimension 66 x 70 mm Six layer PCB design for best noise immunity There is an accompanying OEM Base Board version Basic that can be used for initial prototyping work The features of the board are e Connectors 192 pos 2mm pitch connector for LPC2468 OEM Board Ethernet connector RJ45 MMC SD interface amp connector JTAG connector Pads for ETM connector Interfaces Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 5 USB OTG interface amp connector USB device interface amp connector USB host interface amp connector Fullmodem RS232 on 1 CAN interface amp connector e Power Power supply either via USB or external 9 15V DC Expansion Color QVGA LCD expansion connector serial and parallel interface options WLAN module IEEE802 11b expansion connector e Other 5 push button keys four via I2C and one on P2 10 SLEDSs four via 2 and one on P2 10 2 Analog inputs USB to serial bridge on UART 0 FT232R and ISP functionality Reset push button and LED OEM Board signals available on expansion connector pads 240x150 mm in size 12 ESD Precaution Please note that the LPC2468 OEM Board and OEM Base Board Basic come without any case box and all components are exp
9. Base Board P2 27 No special usage on OEM Base Board Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 26 P2 28 No special usage on OEM Base Board P2 29 No special usage on OEM Base Board P2 30 No special usage on OEM Base Board P2 31 No special usage on OEM Base Board P3 0 P3 15 The 16 bit databus connects to the QVGA display add on module databus P3 16 Can be connected to RS232 interface or WLAN add on module P3 17 Can be connected to RS232 interface or WLAN add on module P3 18 Can be connected to RS232 interface or WLAN add on module P3 19 Can be connected to RS232 interface P3 20 Can be connected to RS232 interface or WLAN add on module P3 21 Can be connected to RS232 interface or WLAN add on module R322 Can be connected to RS232 interface P3 23 No special usage on OEM Base Board P3 24 No special usage on OEM Base Board P3 25 No special usage on OEM Base Board P3 26 No special usage on OEM Base Board P3 27 No special usage on OEM Base Board P3 28 Can be used to control backlight intensity of QVGA display add on module P3 29 No special usage on OEM Base Board P3 30 Can be connected to RS232 interface or WLAN add on module P3 31 No special usage on OEM Base Board P4 0 P4 23 The address bus A1 connects to QVGA display add on module RS input P4 2
10. COM amp LPT EUSB Serial Port COM3 Sft Processors SCSI and RAID controllers Sound video and game controllers id System devices amp Universal Serial Bus controllers A AA EH Figure 21 Device Manager Dialog Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 37 The new port USB Serial Port will be listed under the Ports list Right click on the new USB Serial Port and select Properties as illustrated in Figure 22 below Device Manager m m File Action View e 9 mma IDE ATA ATAPI controllers amp IEEE 1394 Bus host controllers gt Keyboards 7 Mice and other pointing devices USB Serial Port Monitors E Network adapters 1394 Net Adapter E9 Broadcom 440x 10 100 Integrated Controller Dell draadloze WLAN 1450 dubbele band WLAN Mini PC Wireless G Notebook Adapter with SRX Other devices PCMCIA adapters 2 Properties ax Ports COM amp LPT Port COM p ante DINE Disable SCSI and RAID controle Uninstal Sound video and game ES t H H 9 System devices Scan for hardware change Universal Serial Bus con NN Opens property sheet for the current selection property sheet for the current selection Figure 22 Device Manager Port Dialog Set
11. LPC2468 microcontroller has three on chip C communication channels Channel 0 is used for communicating with the E PROM More peripheral units are easily connected to the two wire bus just as long as the addresses do not collide The address of the 256kbit is 0xA0 There are 1 5 kohm pull up resistors which are always needed on busses included on the board E PROM can be found on page 4 of the schematic 2 1 10 Expansion Connectors The LPC2468 OEM Board integrated the core part of a typical LPC2468 board design with a reasonable large amount of external memories Almost all signals of LPC2468 are available on the two 96 pos 2mm pitch expansion connectors 2 2 Memory Layout The external memory controller on the LPC2468 defines eight memory regions named CSO CSI CS2 CS3 DYCSO DYCS1 DYCS2 and DYCS3 Of these eight three memory areas are used by the LPC2468 OEM Board These are e CSO address range 0 8000 0000 Ox80FF FFFF An external NOR FLASH 32 MBit 4 MByte in size is addressed Note that it s treated as four 1MByte non continuous areas e CSI address range 0x8100 0000 0x81 FF FFFF An external NAND FLASH 1 128 MByte in size is addressed DYCSO address range 0xA000 0000 OxAFFF FFFF An external SDRAM 256 MBit 32 MByte in size 15 addressed Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide 15 These three
12. are trademarks of Embedded Artists AB All other brand and product names mentioned herein are trademarks services marks registered trademarks or registered service marks of their respective owners and should be treated as such Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 3 Table of Contents 1 Introduction 4 11 Features 4 1 2 ESD Precaution 5 13 Other Products from Embedded Artists 5 1 3 1 Design and Production Services 5 1 3 2 LPC2xxx Education QuickStart Boards and Kits 6 2 LPC2468 OEM Board Design 7 2 1 LPC2468 OEM Board Schematics v1 1 7 2 1 1 CPU 12 2 1 2 Powering 12 2 1 3 Analog Inputs Outputs 12 2 1 4 Ethernet Interface 12 2 1 5 External Memories 13 2 1 6 External Memory Interface 13 2 14 7 USB OTG 14 2 1 8 Reset Generation 14 2 1 9 12C E2PROM 14 2 1 10 Expansion Connectors 14 2 2 Memory Layout 14 2 3 Usage of CPU Pins 15 2 4 1 2468 OEM Board Mechanical Dimensions 17 3 Base Board Basic Design 18 3 1 Base Board Basic Schematics v1 1 18 3 2 Usage of CPU Pins 23 3 3 Jumpers 27 3 3 1 Illegal Jumper Combinations 28 3 4 Connectors 28 3 5 Important Components 29 3 6 QVGADisplay Add on Board 30 3 6 1 QVGA Display Jumper Settings 31 4 Getting Started 32 4 1 Basic Requirements 32 4 2 Initial Setup and Powering 32 4 3 LAN Ethernet Setup 34 4 4 FTDI USB Driver 35 4 4 1 USB Driver Behavior 39 5 CD ROM and Product Registration 40 5 1 Product Registration 40 6 Fur
13. be used for USB channel A indicator P1 19 No special usage on OEM Base Board P1 20 No special usage on OEM Base Board 1 21 special usage Base Board P1 22 No special usage on OEM Base Board P1 23 No special usage on OEM Base Board P1 24 No special usage on OEM Base Board P1 25 No special usage on OEM Base Board P1 26 No special usage on OEM Base Board P1 30 Can be connected to VBUS signal from USB host power P1 31 Can be connected to over current error signal from USB host power switch P2 0 P2 9 Connects to ETM pads if connector mounted Else these signals have no special usage on OEM Base Board P2 10 Connected to push button for enabling bootloader during reset or EINTO input Also connects to LED active low Connects to USB to serial bridge for automatic ISP functionality P2 11 Can be connected to Ethernet PHY interrupt output P2 12 Can be connected to NAND FLASH busy output P2 13 No special usage on OEM Base Board P2 14 When used as CS2 can be used to control DBUS EN P2 15 No special usage on OEM Base Board P2 16 No special usage on OEM Base Board P2 17 No special usage on OEM Base Board P2 19 No special usage on OEM Base Board P2 21 When used as DYCSI can be used to control DBUS EN P2 22 No special usage on OEM Base Board 2 23 No special usage on Board P2 25 No special usage on OEM Base Board P2 26 No special usage on OEM
14. cable or via an Ethernet switch hub the blue cable The red cable is a crossed Ethernet cable and the blue is a normal cable The uClinux Ethernet driver of the LPC2468 OEM Board can automatically detect the type of cable and act accordingly so different cables are not strictly needed Your PC Figure 19 Ethernet LAN Cable Connection The Ethernet cable should be connected during powerup Else there will be a long timeout delay where the board waits for a valid Ethernet link The default network configuration of the LPC2468 OEM Board is Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 35 IP address 192 168 0 100 Netmask 255 255 255 0 Default gateway 192 168 0 1 Nodes on an IP network can communicate directly with each other if they are on the same LAN i e Ethernet network and is on the same IP subnet This means that the LPC2468 OEM Board must be on the same subnet as your address starting with 192 168 0 x 15 a common IP subnet for many PCs If this does not match your PC either change the IP address of your PC or change the IP address of the LPC2468 OEM Board see description of this at the last section of this page Make sure your PC does not have the IP address 192 168 0 100 but any other IP address in the range 192 168 0 X where X is 1 99 101 254 will do Some valid IP addresses for your PC are for example 192 168 0 2 192 168 0 3 or 192 168 0 200 Now
15. it s time for the first test Connect the Ethernet cable and power up the board Make sure the PC and the LPC2468 OEM Board are in the same IP subnets An easy way to test if Ethernet IP communication function properly is to ping the board From a command prompt window type ping 192 168 0 100 Note the green LEDs on the Ethernet connector of the OEM Base Board that flash every time an Ethernet frame is received You should be able to see the LED flash at the same rate as the ping packages are sent Other communication on your Ethernet network might make the LED flash much faster than this 4 4 FTDI USB Driver A USB driver must be installed on your PC computer in order for the USB to UART chip FT232R to function Make sure to download the latest version of the driver which can be found at the following URL http www ftdichip com Drivers VCP htm search for FT232R driver for your operating system Latest version of the driver at the time of writing this document is 2 00 00 When the OEM Base Board is connected to the PC via an USB cable the PC will ask for a driver Unpack unzip the downloaded driver file and browse to the position of the driver files After successful driver installation a COM port will be created Before communication with the Board can take place the UART settings must be correctly set The following description is valid for Windows XP but other operating systems have similar dialog windows See the USB d
16. on chip UART peripheral includes a fractional baud rate generator that allows standard baud rates to be generated with low frequency error Due to a silicon errata the highest internal core clock frequency at the time of writing this document is 57 6 MHz This corresponds to an internal PLL frequency of 288 MHz that is divided by 5 to get 57 6 MHz and divided by 6 to get a 48 MHz clock for the USB interface There is a 32 768 kHz crystal clock for the on chip real time clock peripheral unit or RTC for short The microcontroller can be placed in a very low power mode while the RTC operates and keeps track of time Power for the RTC during these low power modes comes from the VBAT input pin Power is sourced either from the 3 3V power supply or the external VBAT IN signal available on the expansion connector depending on which one have highest voltage The VBAT power signal has a large 0 3F backup capacitor that can supply current for many days without power to the LPC2468 OEM Board module 2 1 2 Powering There is no internal power supply on the board The LPC2468 contains an internal DC DC converter to generate the internal 1 8V power needed by the core The LPC2468 OEM Board module must be powered by a single external 3 3V power supply The supply must be stable and should have at least 100uF bulk capacitor s close to the power pins on the expansion connector 2 1 3 Analog Inputs Outputs The LPC2468 contains analog peripherals th
17. versions of the documents than the ones linked to here Always check for the latest information version Copyright 2007 Embedded Artists AB
18. ysng s ANOJINIH ASGO 010090900 ge MEA GS OWW sjndui Boyeuy Figure 9 OEM Base Board Basic Schematic v1 1 page 3 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide G y 19945 8Z TT 900Z 1eg i1uaun2og STFA 2tseg se8 W30 ILLL NWO J 06219 lt lt nj 22254 1 LYVN 3001 49 AowsnzzlauooL del a OND T Qv3831n2433 I pe INIT p oer ayo a T 4u001 AoW ane a 4001 012 63T oT inoa 206622 2056299 sn Figure 10 OEM Base Board Basic Schematic v1 1 page 4 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Fractory setbngs USB channel B as device OEM Base Board Basic v1 1 0 Document Number Date 2006 11 28 13 32 95 TITLE WLAN Module LHOST DEVICE EN B PWR VBUS B EDB cb 978 41 1014 ed 74 1604 5 2025 2 USB channel OTG USB channel as host U12 Figure 11 OEM Base Board Basic Schematic v1 1 page 5 The OEM Base Board contains a number interfaces and connectors to the LPC2468 OEM Board The design can be viewed as a reference sc
19. 3 18 D 19 PWMO 2CTS1 P2 19D 19 PWMO 4 0CD1 P3 20 020 PWMO 5DSR1 P3 21 02 PWMO 6IDTR1 322022 3 23 023 1 0 P3 24 D24 CAP0 WPWM1 1 3 25025 0 1 2 3 26 02 1 3 3 27 021 1 1 4 3 28 028 1 VPWM1 5 3 29D 20MAT1 O PWM 15 P330D3OMATIURTS B 3 31031 1 2 gt FPO ORDI TXDS SDAT FO ITDI RXDSISCL1 PO ZITXDO PO SRXDO 4 2 CLK RDZ CAPZ O PO SIZSRX WS TD2 CAF2 1 POJBIIZSRX SDA SSELTMATZ O 7125 CLK SCKVMAT2 1 2 WSIMISOVMAT2 2 0 9125 5 5 2 3 0 10 02 50 2 0 P0 11 RXD2 SCL2IMAT3 1 P0 12 PORT_PWR_BIMISO1 AD0 6 PO T3LED B MOSIT ADO T P0 14HOST EN BDEVICE EN B SSELT 0 15 01 5 05 PO T amp RXDT SSELO SSEL PO 17 CTS1 MISOOMISO PO 18 DCD1 MOSIOMOS P0 18DSR1 MCICLKUSDA1 FO 20 DTR VMCICMD SCLT PO ZVRITIMCIPWRIRDT PO ZZ RTSTMCIDATOTD1 PO 23 ADO ZSRX CLK CAP2 0 P0 24 AD0 VI2S RX WS CAP3 1 0 25 00 21255 _ P026 AD0 3AQUTIRXD3 P0 27 SDA0 P028 SCL0 P029USBAD P0 30 USBAD P0 31 USBBD USBBD 0 P1 2 ENET TXD2 MCICLK PWMO 1 P1 3ENET TXD3 MCICMD PWMO 2 P14 ENET TX_EN P1 S ENET TX_ERIMCIPWRIPWMO 3 P1 G ENET TX_CLKIMCIDATOPWMO0 4 1 1 5 P1 8ENET CRS P1 9 ENET RXDO P1 10 ENET RXD1 P1 11 ENET RXD2MCIDAT2 PWMO 6 P1 12 ENET RXDS MCI
20. 4 Connects to QVGA display add on module RD E input P4 25 Connects to QVGA display add on module WR_RW input P4 26 No special usage on OEM Base Board P4 27 No special usage on OEM Base Board P4 28 No special usage on OEM Base Board P4 29 No special usage on OEM Base Board VBAT No special usage on OEM Base Board ALARM No special usage on OEM Base Board VREF Connects to VDDA V3A VDDA Used to generate reference voltage for trimpots analog inputs VSSA JTAG Connected to standard 20 pos 2x10 pin JTAG connector Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 27 signals Enable jumper also exists RESET Connects to RESET push button and USB to serial bridge for automatic ISP functionality RSTOUT Connects to RESET LED indicator Used to reset U2 9532 Can be connected to QVGA display reset input 3 3 Jumpers The OEM Base Board has a number of jumpers in order to be able to connect disconnect and fully utilize all functionality of the LPC2468 and the boards Figure 12 below illustrates all jumpers and explains to what part of the design they belong MCIPWR Polarity J27 Top pos active low Bottom pos active high MCIDATO Select J47 Top pos P0 22 Bottom pos P1 6 ISP Fucntionality J33 in order from top to bottom P2 10 RESET USB Serial Connect J30 J31 Left pos UART 0 Right pos to WLAN module
21. C2468 contains both a USB device and USB host interface Two alternative USB signal pairs exist USB channel A and channel B Some restrictions exist for how device and host interfaces can be mixed See the IPC2468 User s Manual for details about this An external USB OTG transceiver ISP1301 from NXP is connected to USB channel A The chip is only active during initial OTG signaling for deciding if the unit shall be a USB device or host The chip also provides pull up pull down functionality on D D signals needed for USB device host advertising If OTG functionality is not needed the chip is inactive and does not interfere with the USB communication Note that the USB OTG negotiation must be implemented in software which is not provided for free 2 1 8 Reset Generation The rest generation is handled by a standard voltage supervisor chip CAT811S from Catalyst Semiconductor The reset signal will be held active 1 e low until the supply voltages 3 3V is within margins The reset duration is typically 200 mS consult the CATS11S datasheet for exact details The output reset signal is push pull output that is converted to an open collector open drain output via the 74LVC1G125 buffer An external reset source can pull the reset signal low with an open collector open drain output The reset generator can be found on page 4 of the schematic 2 1 9 2C E2PROM There is also a 256 kbit E PROM accessible via the interface The
22. DATS PCAPO O _ DV P1 14 ENET RX ER 1 15 P1 16 ENET MDC P1 17 ENET MDIO P1 TBLED AIPWMT T CAPT O P1 19TX E APORT PWR A CAPT T P120TX DP APWM1 2SCK0 P1 21TX DM A PWMI S SSELO P122 RCV AIPWRD AIMAT 1 0 P123RX DP A PWMT 4 MISOO P 24 RX DM A PWMT SIMOSIO P125LOW 5 8 EN AIMATI T P128 SUSPEND A PWM 1 6 0 P1 ZTIINT AIOVR CRNT A CAFO 1 P1 28 SCL APCAP OIMATO O P1 28 SDA A PCAPT 1 1 P1 30PWRD B VBUS B ADO T 1 3 CRNT BISCK1 ADO 5 P2 0 PWM1 1 TXD WTRACECLK P2 1 PWM1 2RXD VPIPESTATO P2 2PWMT SICTST PIPESTAT1 P23IPWM14 DCD VPIPESTAT2 P2 A PWM1 SDSRIITRACESYNC P2 5 PWMITLGIDTRYTRACEPKTO P2 6 PCAP1 0 RIVTRACEPKT1 F2 7IRD2RTS1 TRACEPKT2 PZ8 TD2 TXDZ TRACEPKT3 F2 9IRXD2 EXTINO P2 10 EINTO F2 1UEINTIMCIDATTIZSTX P2 12 EINTZ MCIDATZIZSTX WS P2 18 EINTS MCIDAT3 2STX SDA P2 14 CS2 CAP2 0SDA1 P2 15rCS3ICAP2 1 SCL1 P2 18CAS P2 17 RAS P218 CLKOUTO P2 19 CLKOUT1 P220DYCSO P2 21 DYCS1 P2 221DYCS2 CAP3 0SCKO P22 DYCS3 CAP3 1 SSELO P2 24 CKE0 2 25 1 226 2 5 P2 27 CKEQMAT3 1 MOSIO P228 DOMO 229 00 1 230 00 2 25082 F231 DOM3MAT3 3 SCL2 No not connect VDD18 EE A u3 up Copyright 2007 Embedded Artists AB 12 C13 C14 C15 100nF 100nF 100nF 100nF 100nF 100nF ID ID ID D D Place at U1 G3 P6 P8 U13 P17 K16 C17 B13 C9 07 H4 P11 D11
23. NZE wWosz 4444 3308 0 0000 0008X0 059 HSV14 ANY Figure 3 LPC2468 OEM Board Schematic v1 1 page 3 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide S b n us 90 27 00 0 0 2002 9 0 t4 qunN iueun2oQg OTA W30 89 2391 371 3194955 910 v gsn josey Figure 4 LPC2468 OEM Board Schematic v1 1 page 4 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide 9 3 3994 90 21 00 0 0 2002 0 ta qunN iueun2og OTA P4eo8 W30 8992201 3111L BOdWNNZ ZEXEXZ QM VOS Figure 5 LPC2468 OEM Board Schematic v1 1 page 5 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 12 The following subsections describe in more detail each part of the design 2 11 CPU The core part of the design is the NXP LPC2468 microcontroller It s an ARM7TDMI S CPU core with a lot of different peripheral units and on chip memory 512 KByte FLASH and 96 KByte SRAM There is also an external memory bus interface Page 1 of the schematic contains the CPU section of the design The microcontroller crystal frequency is 12 0000 MHz This frequency has been selected in order to allow maximum execution speed the PLL can generate an 80 MHz core clock from this as well as generating standard clock frequencies for the CAN and USB interfaces The
24. Ves Note that VDDA is VDDA connected to 3 3V power P2 0 P2 15 Yes Midi Supply E X132 No di X2 o directly connected to ee crystals 2 25 2 27 RTCX2 P2 30 P2 31 P2 16 P2 17 Yes but used as JTAG Yes RAS CAS and only signals available as outputs via a buffer RESET Yes RSTOUT P2 18 No used as P2 20 CLKOUTO DYCSO CKEO P2 24 for external SDRAM P2 28 P2 29 Yes but used as DQM0 DQM 1 for external SDRAM and LPC2468 OEM Board User s Guide Copyright 2007 Embedded Artists AB The OEM Base Board illustrates how to typically connect external interfaces like Ethernet USB external memory devices etc to the LPC2468 OEM Board Study this schematic also found in this document for details Embedded Artists EA2 USG 0702 v1 0 RevA LPC2468 OEM Board User s Guide Page 17 2 4 2468 OEM Board Mechanical Dimensions Figure 6 below contains a drawing of the board that includes mechanical measures Because of production problems with the current 3x32 pos 2mm pitch connectors the connectors will be changed for version 2 0 of the LPC2468 OEM Board The FX8C 100 connector from Hirose will be used instead Check updated versions of this manual for details Do not use this drawing for own prototype or production since the measurements and connector will be changed Pin 97 97 98 99 100 101 102 103 104 105 Small half circle In the middle of th
25. ancel If Power Off m Timeouts Event On Surprise Removal Set RTS On Close Minimum Read Timeout msec 0 x Disable Modem Ctrl At Startup Minimum Write Timeout msec 0 Figure 24 Advanced USB Serial Port Properties Dialog Finally it s time to test if you have successfully installed and configured the USB Serial Port Start a terminal program Connect to the correct COM port with 38400 bits per second 8N1 no flow control Remember to not have the USB ISP jumpers inserted A message like below should be printed on the terminal Please not that the picture below is just an example The exact message will likely change for future program revisions LPC 2xxx gcc newlib v2 1 0 0 vcn termonly U BOOT HEX com5 38400 12000 O x ile MDISK Loading 2253 bl blocks th diski into ram disk done FS Mounted root Cronfs filesystem readonly reeing init memory 56 or further information check ttp www uclinux org ard specific drivers by Embedded firtists AB ttp wn Enbeddedfirtists con Release 2007 82 25 Check for updates sing drivers 1pc2468eth ko mac found MAC address in u boot env 80 d8 93 88 12 41 mac address 00 10 93 00 12 41 sing drivers lpc2468nnc ko i sector size 512 Bytes card size 512 MBytes gt anticipatory io scheduler drivers lcd ko drivers adc ko dvivers i2c ko drivers pwn ko drivers sfr ko Creg
26. at need a reference voltage which is supplied from the VREF input pin This reference voltage must be supplied externally can be the power which is a filtered 3 3V power supply The VDDA power is available on the expansion connector under the name V3A See schematic for details A filtered version of analog ground is also available under the name VSSA 2 1 4 Ethernet Interface The LPC2468 have an internal Ethernet MAC peripheral with interface to an external PHY 1 the analog interface to an Ethernet interface Page 2 of the schematic contains the Ethernet PHY The KSZ8001L external Ethernet PHY from Micrel is used and interfaces the LPC2468 via the RMII interface The PHY is driven by an external 50 MHz clock that is also feed to the LPC2468 This is part of the RMII interface specification The PHY is always enables can be disabled under program control but have an external power down signal that can be used by an external device There is also an interrupt signal from the PHY that can be used to signal link events like connect disconnect of a cable Neither the power down nor the interrupt signal is used by the LPC2468 OEM Board but the signals are available on the expansion connector If the signals are not used just leave the unconnected Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 13 Due to a silicon errata the P1 6 pin must be left unused This blocks the use of the alterna
27. display Figure 16 QVGA Display Jumper Settings on the OEM Base Board Basic Copyright 2007 Embedded Artists AB Left position for parallel interface connected to the memory bus Right position if serial interface LPC2468 OEM Board User s Guide 32 4 Getting Started This chapter contains information about how to get acquainted with the LPC2468 OEM Board which is shipped with a ready to run image of uClinux In this quick guide you get to take the first step and start using the board Please read this section first before you start using the board it will be well spent time The board is pre loaded with a uClinux distribution and some of the sections below focus on getting contact with the uClinux system console 4 1 Basic Requirements This is a list of what you need to have before you start e A WindowsO PC with an Internet browser e g Internet Explorer or Firefox a Telnet client a FTP client and or a SSH client A Windows PC has Internet Explorer a Telnet and a FTP client as default e A suitable terminal program An Ethernet cable LAN cable to connect the board to your PC a crossed cable if direct connection to the PC or a normal cable if connected to a switch or hub e Optionally a power supply 9 15V DC 2 Amp A 2 1mm standard power plug is used Any polarity 4 2 Initial Setup and Powering The board can be powered from a PC via the included USB cable mini B to A cable A sepa
28. e i e free input pin The busy status of the chip is also available under software control 2 1 6 External Memory Interface The LPC2468 memory interface is available on the expansion connector The databus width Is also 16 bit on the external interface All signals are buffered The buffers are disabled unless enabled by external signals By pulling signal ABUF EN low the two buffers for address and control signals are enabled and act as outputs from the LPC2468 OEM Board The databus buffer 1s controlled by the signal DBUS EN By pulling this signal low the databus buffer is enabled The LPC2468 signal OE controls the direction of the databus buffer During read operations the buffer acts as an input and during write operations it acts as an output Note that DBUS must not be pulled low constantly In that case the buffer will collide with the board s internal databus DBUS must only be pulled low when an external memory IO device is accessed If for example CS2 is used to decode and access an external device connect the signal CS2 directly to DBUS EN If more than one chip select signal is used logically AND all chip select signal together before driving the DBUS signal The OEM Base Board contains an example of this If the external memory interface is not used leave ABUS EN and DBUS EN unconnected Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 14 2 1 7 USB OTG The LP
29. e board 28 mm 24 mm 3 0 mm hole grounded 5 7 mm clearance around hole 70 mm 60 96mm 2400 mil Figure 6 LPC2468 OEM Board Mechanical Dimensions Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide 3 OEM Base Board Basic Design This chapter contains detailed information about the electrical and mechanical design of the OEM Board Basic version 1 1 3 1 OEM Base Board Basic Schematics v1 1 TITLE OEM Base Board Basic v1 1 0 Date 2006 11 28 13 32 05 Document Number 2X32 100MIL J1G 2 5 5 EE d OEM Board LHOST DEVIGE EN 8 2 3 32 2 21651 Figure 7 Base Board Basic Schematic v1 1 page 1 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide 3 2 n us O TTA 2tSe8 5 8 31lIL W13 9iqeu3 N13 eur AIAN sour 4444 44Z8X0 0000 00Z8x0 250 Sp 091 V AO 20100 Jolb ouuoo ver OVI lqeua tt v1 1 page 2 OEM Base Board Basic Schematic Figure 8 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide 3 5 n us 60 20 82 77 9002 9 0 iueun2oQg O TTA 2rseg p4eog eseg ILLL ex OL Zd 1dnui lul sq31 pue suoyng
30. e interface The table below lists the different options L is statically tied to low logic level and H is statically tied to high logic level 16 bit 16 bit 16 bit 8 bit 8 bit 8 bit 9 bit 8 bit parallel parallel parallel parallel parallel parallel serial serial 18 bit 18 bit 16 bit 18 bit 18 bit 16 bit 18 bit 16 bit color color color color color color color color Conf guration depth depth depth depth depth depth depth depth pins 9 9 16 2 6 6 6 8 8 2 8 8 9 9 8 8 L L L L L L H H PSX H H L H H L DTX1 L H L L H H DTX2 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 31 L L L H H H H BWS0 H H H H H L BWSI Does not matter This pin is currently not used Set to L BWS2 If the parallel interface is selected the i86 interface is selected since the C86 input pin is pulled low See datasheet for details about timing and how the different control signals are used For the 186 interface the RD E signal is Read strobe and the WR RW signal is Write strobe If a serial interface is used see the datasheet for details about timing and how the different control signals are used Note that maximum clock frequency is 10 MHz 3 6 1 QVGA Display Jumper Settings The picture below illustrates the jumper settings for the display Jumpers to select interface to
31. hematic for custom designs around the LPC2468 OEM Board The features of the OEM Base Board can be summarized as below Connectors Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide 23 192 pos 2mm pitch connector for LPC2468 OEM Board Ethernet connector RJ45 MMC SD interface amp connector JTAG connector Pads for ETM connector e Interfaces USB OTG interface amp connector USB device interface amp connector USB host interface amp connector Full modem RS232 on 1 CAN interface amp connector e Power Power supply either via USB or external 9 15V DC Expansion Color QVGA LCD expansion connector serial and parallel interface options WLAN module IEEE802 11b expansion connector e Other 5 push button keys four via I2C and one on P2 10 5 LEDs four via I2C and one on P2 10 2 Analog inputs USB to serial bridge on UART 0 FT232R and ISP functionality Reset push button and LED OEM Board signals available on expansion connector pads 240x150 mm in size Note that the mini USB connector J39 on v1 0 v1 1 of the OEM Base Board Basic is a mini B USB connector The correct connector should be a mini AB USB connector in case full OTG functionality should be implemented 3 2 Usage of CPU Pins Almost all pins of the LPC2468 are directly available on the expansion connectors Only in a few cases are pins used f
32. lay expansion connector 009000008 2 USB OTG J39 USB Device CONI USB Host J43 Figure 13 OEM Base Board Basic External Connectors Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide 29 3 5 Important Components Figure 14 below illustrates the position on the OEM Base Board Basic for some important components in the design SD MMC LEDs power inserted write protected USB to serial activity LEDs WLAN module factory reset key 000000 000000 900000 11 21 E z 210 Trimpots for analog inputs P2 10 push button SW6 Reset push button and Reset LED Figure 14 OEM Base Board Basic Important Components Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 30 3 6 QVGA Display Add on Board The picture below illustrates how the display is used as an add on module to the Base Board The LPC2468 CPU can access the display via an 8 bit parallel interface 16 bit parallel interface or an 8 bit serial SPI like interface The 16 bit parallel interface is the fastest and result in quickest display update time Jumpers to select interface to display Embedded Artists Figure 15 QVGA Add on Module Mounting on OEM Base Board There are 6 pins that are used to configure th
33. memory regions cannot be used by external devices CS2 and DYCSI however free for external use via the buffered memory interface Both address and data busses are buffered 2 3 Usage of CPU Pins Almost all pins of the LPC2468 are directly available on the expansion connectors Only in a few cases are pins used for dedicated functionality like Ethernet interface and USB OTG Such pins are not available on the expansion connector The table below lists all pins and their possible restrictions Copyright 2007 Embedded Artists AB Pin Available on expansion only available as outputs connector via a buffer P3 0 P3 15 Yes but used as databus P0 27 P0 28 Yes but I2C E2PROM and only available via connected to these pins databus buffer 0 29 0 30 Yes but external USB P3 16 P3 31 Yes OTG transceiver connected to these pins P4 0 P4 23 Yes but used as address bus and only available as Yes outputs via buffers USBB Yes P4 24 P4 27 Yes but used as OE WE BLSO BLS1 and P1 0 P1 1 No connected to Ethernet only available as outputs P1 4 PHY via a buffer P1 8 P1 10 P1 14 P1 17 4 28 4 29 Yes P4 30 P4 31 No used as CSO CS1 for ios external NOR NAND FLASH memories P1 11 P1 13 rs VBAT Yes via forward diode P1 26 P1 30 P1 31 ALARM Yes P1 27 P1 29 No connected to external VREF
34. ns of different documents and programs available See Section 5 1 for information about the product registration process which allows you to always have access to the latest versions 5 1 Product Registration By registering as a customer of Embedded Artists you will get access to more valuable material that will get you up and running instantly e Access to the QuickStart Build Environment from Embedded Artists which contains a complete setup of a build environment for GCC e Access to a Real Time Operating System R TOS in the form of a library that can be used for non commercial applications e Access to a number of sample applications that demonstrated different peripheral functions in the LPC2468 processor e Access to the latest versions of all information and programs on the CD ROM Registering is easy and done quickly 1 Go to http www EmbeddedArtists com select Support and then Register 2 Type in the products serial number can be found on the LPC2468 OEM Board package along with your personal information Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 41 6 Further Information The LPC2468 microcontroller is a complex circuit and there exist a number of other documents with a lot more information The following documents are recommended as a complement to this document 1 NXP LPC2468 Datasheet http www standardics nxp com products lpc2000 pdf lpc2468 pdf 2 NXP LPC2468 Use
35. or dedicated functionality like Ethernet interface and USB OTG Such pins are not available on the expansion connector The table below lists all pins and their possible restrictions Pin Usage P0 0 be connected for CAN channel 1 0 1 connected to TD1 for channel 1 P0 2 Can be connected to USB to serial bridge TxD on UART 0 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 24 P0 3 Can be connected to USB to serial bridge RxD 0 P0 4 Can be connected to RD2 for CAN channel 2 P0 5 Can be connected to TD2 for CAN channel 2 P0 6 Can be used as CS input to QVGA display add on module P0 7 Can be used as RS input to QVGA display add on module P0 8 Can be used as WR R W input to QVGA display add on module P0 9 No special usage on OEM Base Board P0 10 No special usage on OEM Base Board P0 11 No special usage on OEM Base Board P0 12 Can be connected to enable USB host power switch P0 13 Can be connected to LED active low for USB host indicator P0 14 Can be connected to USB device enable device signal USB channel B P0 15 Can be connected to QVGA display for serial interface SPI SCK P0 16 No special usage on OEM Base Board P0 17 Can be connected to QVGA display for serial interface SPI MISO P0 18 Can be connected to QVGA di
36. osed for finger touches and therefore extra attention must be paid to ESD Electro Static Discharge precaution Make it a habit to always first touch the metal surface of one of the USB connector for a few seconds with both hands before touching any other parts of the boards That way you will have the same potential as the board and therefore minimize the risk for ESD Never touch directly on the LPC2468 OEM Board and in general as little as possible on the OEM Base Board Basic The keys on the OEM Base Board have grounded shields to minimize the effect of ESD Note that Embedded Artists does not replace boards that have been damaged by ESD 1 3 Other Products from Embedded Artists Embedded Artists have a broad range of LPC2xxx and soon LPC3xxx based boards that are very low cost and developed for prototyping development as well as for OEM applications Modifications for OEM applications can be done easily even for modest production volumes Contact Embedded Artists for further information about design and production services 1 3 1 Design and Production Services Embedded Artists provide design services for custom designs either completely new or modification to existing boards Specific peripherals and I O can be added easily to different designs for example communication interfaces specific analog or digital I O and power supplies Embedded Artists has a broad and long experience in designing industrial Copyright 2007
37. r s Manual http www standardics nxp com support documents microcontrollers pdf user manual lpc2468 pdf 3 NXP LPC2468 Errata Sheet http www standardics nxp com support documents microcontrollers pdf errata Ipc2468 pdf 4 ARM7TDMI Technical Reference Manual Document identity DDI0029G http www arm com pdfs DDI0029G 7TDMI R3 trm pdf 5 ARM Architecture Reference Manual Document identity DDIO100E Book Second Edition edited by David Seal Addison Wesley ISBN 0 201 73719 1 Also available in PDF form on the ARM Technical Publications CD 6 ARM System Developer s Guide Designing and Optimizing System Software by A N Sloss D Symes C Wright Elsevier ISBN 1 55860 874 5 7 Embedded System Design on a Shoestring by Lewin Edwards Newnes ISBN 0750676094 8 GNU Manuals http www gnu org manual 9 GNU ARM tool chain for Cygwin http www gnuarm com 10 An Introduction to the GNU Compiler and Linker by Gatliff http www billgatliff com 11 LPC2000 Yahoo Group A discussion forum dedicated entirely to the Philips LPC2xxx series of microcontrollers http groups yahoo com group 1pc2000 12 The Insider s Guide to the NXP LPC2300 2400 Based Microcontrollers by Trevor Martin http www hitex co uk download docs 1pc2300 con reg download 1pc2300 book html Especially note document 3 There exist a number of bugs in the processor that is important to be aware of Note that there can be newer
38. rate power supply is however needed in stand alone situations or when running USB Host application when powering external USB devices The power supply should be 9 15V DC 2 Amp A 2 1mm standard power plug is used to interface the board Any polarity is accepted See Figure 17 below for locating the USB connector and or the 2 1mm power connector It is possible to have both the USB cable and external powering connected to the board at the same time Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 33 Your PC Optional Powerin USB cable Figure 17 Powering of OEM Base Board Basic The OEM Base Board contains a USB to Serial bridge chip FT232R from FTDI that connects UART channel 0 on the LPC2468 to a virtual COM port on the PC via USB It is this serial channel that is the console interface to the uClinux system Special USB drivers must be installed on the PC in order for the virtual COM port to be created See Section 4 4 for a description of how to install the FTDI USB driver There are four jumpers on the OEM Base Board related to the USB serial channel connected to UART 0 of the LPC2468 See Figure 18 below for details about where the jumpers are located Make sure the automatic ISP jumpers are open If not it s possible that a terminal program resets the board and or enable ISP mode by accident These jumpers should normally always be open The only exception is when updating the
39. river documentation for details if needed To change UART settings first open the System Properties dialog as illustrated in the figure below Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 36 System Properties System Restore Automatic Updates General Computer Name Hardware Advanced Device Manager Device The Device Manager lists all the hardware devices installed on Manager your computer Use the Device Manager to change the properties of any device Device Manager Drivers Driver Signing lets you make sure that installed drivers are compatible with Windows Windows Update lets you set up how Windows connects to Windows Update for drivers Driver Signing Windows Update Hardware Profiles Hardware profiles provide a way for you to set up and store different hardware configurations Hardware Profiles Figure 20 System Settings Dialog Then select the Device Manager and then open the Ports list as illustrated in Figure 21 below a Device Manager File Action View e m ma 3 IDE ATA ATAPI controllers IEEE 1394 Bus host controllers t Keyboards 7 5 Mice and other pointing devices 1d Monitors Network adapters 1394 Net Adapter 98 Broadcom 440x 10 100 Integrated Controller Dell draadloze WLAN 1450 dubbele band WLAN Mipi Wireless G Notebook Adapter with SRX A Other devices PCMCIA adapters 7 Ports
40. splay for serial interface SPI MOSI P0 19 No special usage on OEM Base Board P0 20 Can be connected to Ethernet PHY power down input P0 21 Can be connected to QVGA display reset input P0 22 Connects to MCIDATO on SD MMC connector P0 23 Can be connected to analog input trimpot 0 P0 24 Can be connected to analog input trimpot 1 P0 25 No special usage on OEM Base Board P0 26 No special usage on OEM Base Board P0 27 I2C SDAO connects to 02 PCA9532 IO expander P0 28 I2C SCLO connects to U2 PCA9532 IO expander 0 29 0 30 Connects to mini AB USB connector 739 P0 31 Connect either to USB device B connector or USB Host A USBB connector J43 P1 2 Connects to MCICLK on SD MMC connector P1 3 Connects to MCICMD on SD MMC connector P1 5 Connects to MCIPWR on SD MMC connector 1 6 Should not used due to silicon errata on LPC2468 when using Ethernet 1 7 Connects to MCIDAT1 on SD MMC connector P1 11 Connects to MCIDAT2 on SD MMC connector Connects to MCIDAT3 on SD MMC connector Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide 25 P1 13 No special usage on OEM Base Board P1 14 No special usage on OEM Base Board P1 15 No special usage on OEM Base Board P1 16 No special usage on OEM Base Board P1 17 No special usage on OEM Base Board P1 18 Connects to LED active low to
41. ther Information 41 Copyright 2007 Embedded Artists AB LPC2468 OEM Board User s Guide Page 4 1 Introduction Thank you for buying Embedded Artists LPC2468 OEM Board based on NXP s ARMTTDMI S LPC2468 microcontroller This document is a User s Guide that describes the LPC2468 OEM Board and the OEM Base Board Basic hardware design There is a separate document describing program development for the LPC2xxx series in general 1 1 Features Embedded Artists LPC2468 OEM Board with NXP s ARM7TDMI LPC2468 microcontroller lets you get up and running quickly The small form factor OEM board offers many unique features that ease your learning curve and program development The board has also been designed for OEM applications with volume discount available NXP s ARM7TDMI LPC2468 microcontroller in BGA package with 512 KByte program FLASH and 96 KByte SRAM e External FLASH memories 128 MB NAND FLASH and 4 MB NOR FLASH e External data memory 32 MB SDRAM e 12 0000 MHz crystal for maximum execution speed and standard serial bit rates including CAN and USB requirements e 32 768kHz RTC crystal with 0 3F capacitor backup power e 100 10M Ethernet PHY interface based on Micrel KSZ8001L e USB OTG support on USB A channel via external ISP1301 chip e 256 Kbit I2C E2PROM for storing non volatile parameters Buffered 16 bit databus for external expansion e Connector 2x96 pos connector 2 x 3 rows with 32 pos 2mm pitch
42. tive function MCIDATO which is relevant for the MCI interface In this case pin P0 22 can be used instead since the MCIDATO signal is available in this pin also 2 1 5 External Memories There are three external memory chips connected to the external memory bus interface of the LPC2468 16 bit databus width is used on the board Anexternal NOR FLASH 32 MBit 4 MByte in size addressed by CSO address range 0x8000 0000 0 80 FFFF e Anexternal NAND FLASH 1 GBit 128 MByte in size addressed by CS1 address range 0x8100 0000 0x81FF FFFF e Anexternal SDRAM 256 MBit 32 MByte in size addressed by DYCSO address range 0xA000 0000 FFFF Note that the NOR FLASH area is not continuous The schematic has been designed to support chips form different manufacturers The trade off for this is that the 4 MByte NOR FLASH currently behaves like four IMByte non continuous memory areas The four banks are as follows I bank 0x80000000 0x800FFFFF e 2 bank 0x80400000 0x804F FFFF 3 bank 0x80200000 0x802FFFFF 4 bank 0x80600000 0x806FFFFF Note that this structure will be changed for v2 boards where the NOR FLASH will be treated as one single 4MByte area The NAND FLASH has an optional busy output that can be used for controlling the erase program operations with better precision The signal is available on the expansion connector If needed the signal can be routed to a suitabl
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