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
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