HP Compaq dc7600 MT Technical Reference Manual page 84

Input/Output Interfaces
Pin Signal
1 RESET-
2 GND
3 DD7
4 DD8
5 DD6
6 DD9
7 DD5
8 DD10
9 DD4
10 DD11
11 DD3
12 DD12
13 DD2
14 DD13
15 DD1
16 DD14
17 DD0
18 DD15
19 GND
20 --
NOTES:
[1] On UATA/33 and higher modes, re-defined as STOP.
[2] On UATA/33 and higher mode reads, re-defined as DMARDY-.
On UATA/33 and higher mode writes, re-defined as STROBE.
[3] On UATA/33 and higher mode reads, re-defined as STROBE-.
On UATA/33 and higher mode writes, re-defined as DMARDY-.
[4] Primary connector wired to IRQ14, secondary connector wired to IRQ15.
[5] Pin 39 is used for spindle sync and drive activity (becomes SPSYNC/DACT-)
when synchronous drives are connected.
5-4
40-Pin IDE (PATA) Connector Pinout
Description
Reset
Ground
Data Bit <7>
Data Bit <8>
Data Bit <6>
Data Bit <9>
Data Bit <5>
Data Bit <10>
Data Bit <4>
Data Bit <11>
Data Bit <3>
Data Bit <12>
Data Bit <2>
Data Bit <13>
Data Bit <1>
Data Bit <14>
Data Bit <0>
Data Bit <15>
Ground
Key
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Table 5-3.
Pin Signal
21 DRQ
22 GND
23 IOW-
24 GND
25 IOR-
26 GND
27 IORDY
28 CSEL
29 DAK-
30 GND
31 IRQn
32 IO16-
33 DA1
34 DSKPDIAG
35 DA0
36 DA2
37 CS0-
38 CS1-
39 HDACTIVE-
40 GND
Description
DMA Request
Ground
I/O Write [1]
Ground
I/O Read [2]
Ground
I/O Channel Ready [3]
Cable Select
DMA Acknowledge
Ground
Interrupt Request [4]
16-bit I/O
Address 1
Pass Diagnostics
Address 0
Address 2
Chip Select
Chip Select
Drive Active (front panel LED) [5]
Ground
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