Pata Interface; Pata Interface (5.3) - HP Compaq dc7800 Series Technical Reference Manual

5.3 PATA Interface

The USDT system board includes a SATA-to-PATA bridge and slim IDE connector that supports
an IDE-type optical disk drive. The pinout for this connector is listed in Table 5-2
The 44-pin slim IDE connector is shown in the figure below.
Figure 5-2. 44-pin Slim IDE Connector (P21on system board).
Pin Signal
1 RESET#
3 DD7
5 DD6
7 DD5
9 DD4
1 1 DD3
13 DD2
15 DD1
17 DD0
19 GND
21 DMARQ
Technical Reference Guide
2
1
Table 5-2.
44-Pin Slim IDE Connector Pinout
Pin Signal Pin
2 GND 23
4 DD8 25
6 DD9 27
8 DD10 29
10 DD1 1 31
12 DD12 33
14 DD13 35
16 DD14 37
18 DD15 39
20 Key (no pin) 41
22 GND 43
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Signal Pin Signal
DIOW# 24 GND
DIOR# 26 GND
IORDY 28 CSEL
DMACK# 30 GND
INTRQ 32 NC
DA1 34 PDIAG#
DA0 36 DA2
CS0# 38 CS1#
IDEACT# 40 GND
5V 42 5V
GND 44 Reserved
Input/Output Interfaces
44
43
5-3