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Motherboard Information

Chapter 3

Network Application Platforms

NetRom Connector(JP3): The Net ROM device is the

tool for simulating the boot image during project

developing stage. The NetROM eliminates the need

to burn EPROMs or flash to debug code by utilizing

the Ethernet to download the code images

CompactFlash Connector (P1): It is for connecting

a Compact Flash card to be served as your system’s

storage. The connector is a CF Type II slot which could

fit both CF Type I or CF Type II cards.

1 2 3

Pin No. Function

Short 1-2 Normal

Short 2-3 Debug

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

Pin No. Function Pin No. Function

1 NET_A19 2 NET_A16

3 NET_A15 4 NET_A12

5 NET_A7 6 NET_A6

7 NET_A5 8 NET_A4

9 NET_A3 10 NET_A2

11 NET_A1 12 NET_A0

13 NET_D0 14 NET_D1

15 NET_D2 16 GND

17 NET_D3 18 NET_D4

19 NET_D5 20 NET_D6

21 NET_D7 22 NET_CE#

23 NET_A10 24 BOOT_OE#

25 NET_A11 26 NET_A9

27 NET_A8 28 NET_A13

29 NET_A14 30 NET_A17

31 NET_A18 32 5V

Bootloader Mode Jumper (JP5): There are two

bootloader modes on the MR-320 board; namely,

failsafe and normal bootloader mode. Use this

jumper to switch between them.

External Serial Port(P3): It is the RS-232 serial port.

Pin No. Function Pin No. Function

1 Ground 2 Data 3

3 Data 4 4 Data 5

5 Data 6 6 Data 7

7 CS1# 8 N.C.

9 Ground 10 N.C.

11 N.C. 12 N.C.

13 +5V 14 N.C.

15 N.C. 16 N.C.

17 N.C. 18 Addr 2

19 Addr 1 20 Addr 0

21 Data 0 22 Data 1

23 Data 2 24 N.C.

25 N.C. 26 N.C.

27 Data 11 28 Data 12

29 Data 13 30 Data 14

31 Data 15 32 CS3#

33 N.C. 34 IOR#

35 IOW# 36 +5V

37 IRQ 15 38 +5V

39 N.C. 40 N.C.

41 Reset# 42 IOCHRDY

43 DMA REQ# 44 DMA ACK#

45 CF Active 46 PDIAG#

47 Data 8 48 Data 9

49 Data 10 50 Ground

Pin No. Function

Short 1-2 Failsafe

Short 2-3 Normal

Pin No. Pin name

1 N.C.

2 CMA3

3 N.C.

4 N.C.

5 N.C.

Pin No. Pin name

6 N.C.

7 MA5

8 N.C.

9 N.C.

9 8 7 6

1 2 3 4 5

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19 20

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