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ETX-945 User Manual 1.00 www.diamondsystems.com Page 28
4.4.1 IDE interfaces
These pins carry data and control information to/from the board’s IDE drive controller, as indicated.
Signal Name
Signal Function
Direction
PIDE_D0-15
Primary IDE ATA bidirectional data bus
In/Out
PIDE_A0-2
Primary IDE ATA address bus
Out
PIDE_CS1#
Primary IDE chip select 1
Out
PIDE_CS3#
Primary IDE chip select 3
Out
PIDE_DRQ
Primary IDE DMA Request for IDE Master
In
PIDED_AK#
Primary IDE DACK# for IDE Master
Out
PIDE_RDY
Primary IDE Ready
In
PIDE_IOR#
Primary IDE IOR# command; function differs in Ultra-33 mode
Out
PIDE_IOW#
Primary IDE IOW# command; function differs in Ultra-33 mode
Out
PIDE_INTRQ
Primary channel interrupt request
In/Out
SIDE_D0-15
Secondary IDE ATA bidirectional data bus
In/Out
SIDE_A0-2
Secondary IDE ATA address bus
Out
SIDE_CS1#
Secondary IDE chip select 1
Out
SIDE_CS3#
Secondary IDE chip select 3
Out
SIDE_DRQ
Secondary IDE DMA Request for IDE Master
In
SIDED_AK#
Secondary IDE DACK# for IDE Master
Out
SIDE_RDY
Secondary IDE Ready
In
SIDE_IOR#
Secondary IDE IOR# command; function differs in Ultra-33 mode
Out
SIDE_IOW#
Secondary IDE IOW# command; function differs in Ultra-33 mode
Out
SIDE_INTRQ
Secondary channel interrupt request
In
DASP_S
Drive active or slave present on Secondary IDE channel
Out
PDIAG_S
Slave diagnostic passed indicator; function differs in DMA66 or DMA100
modes
In
HDRST#
Drive hardware reset
Out
CBLID_P#
Detects 80-conductor IDE cable on primary IDE channel
In