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Pinouts of internal connectors and dip switches 135
Internal ATA 40-pin connector
The ATA 40-pin internal connector is a 40-pin, IDC male connector. The pinout
is outlined in the following table.
•Operating voltage: 5 V.
Pin Signal I/O Description
1/RESETOReset.
2GND -Ground.
3DD7 I/OData 7.
4DD8 I/OData 8.
5DD6 I/OData 6.
6DD9 I/OData 9.
7DD5 I/OData 5.
8 DD10 I/O Data 10.
9DD4 I/OData 4.
10 DD11 I/O Data 11.
11 DD3 I/O Data 3.
12 DD12 I/O Data 12.
13 DD2 I/O Data 2.
14 DD13 I/O Data 13.
15 DD1 I/O Data 1.
16 DD14 I/O Data 14.
17 DD0 I/O Data 0.
18 DD15 I/O Data 15.
19 GND - Ground.
20 KEY - Key.
21 DMARQ O DMA request.
22 GND - Ground.
2
40
39
1
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