Diamond Systems PR-Z32-EA-ST, PR-Z32-E-ST O Headers, Main I/O Connector J3, Cable a, Cable B

4. I/O HEADERS

All cables mentioned in this chapter are included in Diamond Systems’ cable kit C-PRZ-KIT. These cables are further described in chapter 25. Some cables are also available individually.

4.1Main I/O Connector – J3

An 80-pin high-density connector is provided for access to the standard user I/O:

♦	4 serial ports	♦	PS/2 keyboard	♦	ATX Power switch
♦	Parallel port	♦	PS/2 mouse	♦	Reset switch
♦	Watchdog timer I/O	♦	IrDA port	♦ Power and HDD LEDs

This connector mates with Diamond Systems’ cable no. C-PRZ-01, which consists of a dual- ribbon-cable assembly with industry-standard connectors at the user end. The CPU mating connector includes integral latches for enhanced reliability. Each ribbon cable has 40 wires.

COM 1

COM 2

COM 3

COM 4

Utilities A

Cable “A”

1DCD1

2DSR 1

3RXD 1

4RTS 1

5TXD 1

6CTS 1

7DTR 1

8RI 1

9Ground

10 DCD 2

11 DSR 2

12 RXD 2

13 RTS 2

14 TXD 2

15 CTS 2

16 DTR 2

17RI 2

18Ground

19DCD 3

20DSR 3

21RXD 3

22RTS 3

23TXD 3

24CTS 3

25DTR 3

26RI 3

27Ground

28DCD 4

29DSR 4

30RXD 4

31RTS 4

32TXD 4

33CTS 4

34DTR 4

35RI 4

36Ground

37+5V Out

38Speaker Out

39IDE Drive LED

40Power LED

LPT 1

Keyboard

Mouse

Utilities B

Cable “B”

1STB-

2AFD-

3PD0

4ERR-

5PD1

6INIT-

7PD2

8SLIN-

9PD3

10 Ground

11 PD4

12 Ground

13 PD5

14 Ground

15 PD6

16 Ground

17 PD7

18 Ground

19 ACK-

20 Ground

21 BUSY

22 Ground

23 PE

24 Ground

25 SLCT

26 KB Clk

27 KB/MS V-

28 KB Data

29 KB/MS V+

30 MS Clk

31 KB/MS V-

32 MS Data

33 KB/MS V+

34 Ground

35 Reset-

36 ATX Power

37 KB Lock

38 IR RX

39IR TX

40+5V In

Prometheus CPU User Manual V1.44 Page 8