Seagate ST625211CF, Product Manual

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ST1 Series Product Manual, Rev. A 27
4.1.1 Flex Interface Connector Signals
The following table summarizes the signal on the Seagate Flex interface connector. For a detailed description
of these signals, refer to ATA-7 Specifications Revision 7.0.
Table 9: Flex interface connector signals
Pin Signal Description
1 Ground Ground
2 DD11 Data bus bit 11
3 DD10 Data bus bit 10
4 DD8 Data bus bit 8
5 RESET- Reset
6 DD14 Data bus bit
7 DD15 Data bus bit
8 IORDY- I/O Ready
DMA ready during Ultra DMA data-in bursts
Data strobe during Ultra DMA data-out bursts
9 INTRQ Interrupt request
10 DA1 Device address bit 1
11 GROUND Ground
12 DA2 Device address bit 2
13 DA0 Device address bit 0
14 DIOW- I/O Write
Stop during Ultra DMA data bursts
15 GROUND Ground
16 DIOR- I/O Read
DMA ready during Ultra DMA data-in bursts
Data strobe during Ultra DMA data-out bursts
17 GROUND Ground
18 PDIAG- Passed diagnostics
19 GROUND Ground
20 DASP- Device active or slave present
21 GROUND Ground
22 CS1- Chip select 0
23 GROUND Ground