24 Lyrion Series IDE Product Manual, Rev. B

23 GROUND Ground
24 DIOW- /
STOP I/O Write to write to device registers or the data port
Stop during Ultra DMA burst
25 DIOR- /
HDMARDY- /
HSTROBE
I/O Read to read device registers or the data port
Flow control during Ultra DMA data-in burst
Data-out strobe signal for Ultra DMA data-out burst
26 GROUND Ground
27 IORDY /
DDMARDY- /
DSTROBE
I/O Channel Ready during register access
Flow control during Ultra DMA data-out burst
Data-in strobe signal for Ultra DMA data-in burst
28 GROUND Ground
29 DMACK- DMA Acknowledge
30 INTRQ Interrupt Request
31 DA01 Address bus bit 1
32 PDIAG- -
33 DA00 Address bus bit 0
34 DA02 Address bus bit 2
35 CS0- Chip Select 0
36 CS1- Chip Select 1
37 DASP- Used to drive external LED when drive is accessed
38 3.3V Voltage input
39 3.3V Voltage input
40 Reserved -
Table 8: 40-way ZIF (IDE interface) connector signals