Intel ECB-870 User Manual
Page 42
User’s Manual
30 ECB-870 User’s Manual
3.10.8 Signal Description – Primary & Secondary and RAID IDE Connector (IDE 1,
2, 3, 4)
PDA [2:0]
Primary Disk Address [2:0]. These signals indicate which byte in either the ATA command
block or control block is being addressed. If the IDE signals are configured for Primary and
Secondary, these signals are connected to the corresponding signals on the Primary IDE
connector. If the IDE signals are configured for Primary 0 and Primary 1, these signals are
used for the Primary 0 connector.
SDA [2:0]
Secondary Disk Address [2:0]. These signals indicate which byte in either the ATA
command block or control block is being addressed. If the IDE signals are configured for
Primary and Secondary, these signals are connected to the corresponding signals on the
Secondary IDE connector. If the IDE signals are configured for Primary Master and Primary
Slave, these signals are used for the Primary Slave connector.
PDCS1#
Primary Disk Chip Select for 1F0H~1F7H Range. For ATA command register block. If the
IDE signals are configured for Primary and Secondary, this output signal is connected to the
corresponding signal on the Primary IDE connector. If the IDE signals are configured for
Primary Master and Primary Slave, this signal is used for the Primary Master connector.
PDCS3#
Primary Disk Chip Select for 3F0H~3F7H Range. For ATA control register block. If the IDE
signals are configured for Primary and Secondary, this output signal is connected to the
corresponding signal on the Primary IDE connector. If the IDE signals are configured for
Primary Master and Primary Slave, this signal is used for the Primary Master connector.
SDCS1#
Secondary Chip Select for 170H~177H Range. For ATA command register block. If the IDE
signals are configured for Primary and Secondary, this output signal is connected to the
corresponding signal on the Secondary IDE connector. If the IDE signals are configured for
Primary Master and Primary Slave, these signals are used for the Primary Slave connector.
SDCS3#
Secondary Chip Select for 370H~377H Range. For ATA control register block. If the IDE
signals are configured for Primary and Secondary, this output signal is connected to the
corresponding signal on the Secondary IDE connector. If the IDE signals are configured for
Primary Master and Primary Slave, these signals are used for the Primary Slave connector.
PDD [15:0]
Primary Disk Data [15:0]. These signals are used to transfer data to or from the IDE device.
If the IDE signals are configured for Primary and Secondary, these signals are connected to
the corresponding signals on the Primary IDE connector. If the IDE signals are configured for
Primary Master and Primary Slave, this signal is used for the Primary Master connector.
SDD [15:0]
Secondary Disk Data [15:0]. These signals are used to transfer data to or from the IDE
device. If the IDE signals are configured for Primary and Secondary, these signals are
connected to the corresponding signals on the Secondary IDE connector. If the IDE signals
are configured for Primary Master and Primary Slave, these signals are used for the Primary
Slave connector.