March Products 120 III (PC620)

User Manual version 2503

LIBRA 120 III (PC620 Intel 815E) 4-

4.1.5.7. IDE1/IDE2: Primary/Secondary HDD

The PC620 provides 2 sets of 40-pin IDE connectors. The

built-in high speed PCI IDE controller supports both PIO and

ATA 100 mode. Up to four IDE devices can be connected,

including large hard disks, CD-ROM drives and other IDE

devices. Their corresponding pin assignments are listed

below:

Pin #

Signal Pin #

Signal

1 RESET# 2 GND

3 DATA 7 4 DATA 8

5 DATA 6 6 DATA 9

7 DATA 5 8 DATA10

9 DATA 4 10 DATA11

11 DATA 3 12 DATA12

13 DATA 2 14 DATA13

15 DATA 1 16 DATA14

17 DATA 0 18 DATA15

19 GND 20 NC

21 IDEREQ 22 GND

23 IOW# 24 GND

25 IOR# 26 GND

27 ICHRDY# 28 GND

29 DACK 30 GND

31 IDEIRQ 32 NC

33 A1 34 LID

35 A0 36 A2

37 IDECS0 38 IDECS1

39 HDD LED 40 GND

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