Computer buses and slots connectors pinouts
This specification makes it possible to share ATA & PC Card with the same connectors.
Pin Namel Host Dir Dev PC-Card equiv
1Groundx-->xGround
2DD3x<->xD3
3DD4x<->xD4
4DD5x<->xD5
5DD6x<->xD6
6DD7x<->xD7
7/CS0x-->x/CE1
8  -->iA10
9/SELATAx-->x/OE
10     
11/CS1x-->x 1)A9
12  -->iA8
13     
14     
15  -->i/WE
16INTRQx<--x/READY:IREQ
17VCCx-->xVCC
18     
19     
20     
21     
22  -->iA7
23  -->iA6
24  -->iA5
25  -->iA4
26  -->iA3
27DA2x-->xA2
28DA1x-->xA1
29DA0x-->xA0
30DD0x<->xD0
31DD1x<->xD1
32DD2x<->xD2
33/IOCS16x<--x/WP:IOIS16
34Groundx-->xGround
35Groundx-->xGround
36/CD1x<--x/CD1
37DD11x<->xD11
38DD12x<->xD12
39DD13x<->xD13
40DD14x<->xD14
41DD15x<->xD15
42/CS1x-->x 1)/CE2
43  <--i/VS1
44/DIORx-->x/IORD
45/DIOWx-->x/IOWR
46     
47     
48     
49     
50     
51VCCx-->xVCC
52     
53     
54     
55M/S-x-->x 2) 
56CSELx-->x 2) 
57  <--i/VS2
58/RESETx-->xRESET
59IORDYo<--x 3)/WAIT
60DMARQo<--x 3)/INPACK
61/DMACKo-->o/REG
62/DASPx<->x/BVD2:SPKR
63/PDIAGx<->x/BVD1:STSCHG
64DD8x<->xD8
65DD9x<->xD9
66DD10x<->xD10
67/CD2x<--x/CD2
68Groundx-->xGround
x = Required.
i = Ignored by host in ATA mode.
o = Optional.
nothing = Not connected.
1) Device shall support only one /CS1 signal pin.
2) Device shall support either /M/S or CSEL but not both.
3)
68 pin male connector layout
68 pin male connector
at the controller
68 pin female connector layout
68 pin female connector
at the peripherals
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PC Card ATA bus visual pinout:
PC Card ATA bus diagram
click to enlarge
Source(s) of this and additional information: ATA-2 specifications, from Hardware Book
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