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EVB7400
A Flash ROM
There is a socket(U9) which accept 512Kbyte size of 8 bit Flash Memory(AT29C010 ~ 40). This is for diaganostic program(includes all
pheriperal device driver and TCP/IP protocol stack) and BIOS(MCS-uClinux Boot loader) program.
User Flash memory(Selectable Boot ROM)
A mounted 48 TSOP type flash(AM29LV160BB), U8, is mounted for saving MCS-uClinux image. It has 2Mbytes(1M x 16bits)size. If you
want to use this for boot ROM, SW2 should be set to to X16 and U9 should be removed. (The default setting is X8)
SDRAM
SDRAM size is 8Mbytes ( 4M x 16bits)
SRAM
There is a SRAM at ROM Bank1. SRAM SIZE is 64K x 16 bits.
NAND Flash
A mounted NAND Flash ROM is provided for saving user data.
To use NAND flash, you should install and uninstall some 0 ohm register at bottom of board. Please refer to chapter 2 and Schemetic.
EEPROM(AT24C256, AT25040)
There are two EEPROM(U3, U4). One is an IIC Serial EEPROM(U3) and the other is a SPI serial EEPROM(U4).
The size of EEPROM(U3) is 32Kbytes, and the size of EEPROM(U4) is 4Kbytes.
RTC & Thermometer
There is a DS1629(U5) for RTC and thermometer check. The RTC clock is supplied by the crystal(32.768KHz)
Serial Port
There are 5 9-pin female Serial ports for serial data communiation. One is for console between the host PC and EVB7400 and others for
converter(Serial to Ethernet, Serial to wireless and so on). And there is one 9-pin mail Serial ports for High Speed UART.
Ethernet Interface
There are RJ45 connector and Ethernet Phy for network.(AC101L, 10/100 BASE-T)
AUDIO IN/OUT
There is a stereo DAC(CS4340) for AUDIO out. And MIC and AMP is connected to ADIN3(ADC channel3) for AUDIO In.
Reset Button
There is a button for system reset.
Power On/Off Switch
There is a swithch for power on/off.
LED Indicatorst
Seven LEDs are supplied on the EVB7400. Each LED shows power status, user programmable status, ethernet link and activity.
PCMCIA Socket
There is a PCMCIA Socket(J2). To use it, you should set ROM BANK3 as PCMCIA mode.
JTAG Port
One 20-pin JTAG port(J3) is supplied to connect with JTAG based Emulator.
Expansion Connectors
Seven connectors(JP2~JP8) are supplied for system expansion. They contain board data bus, adddress bus, external memory bank
control, IIC, SPI, and MII signals.
Key Matrix
There are 12 key buttons. They can be used ADC application.
Five buttons(SW4, SW7, SW10, SW13, SW15) are connected to ADIN0(ADC channel 0).
User’s Manual V.0.10 9/36
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