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4-30 Registers
Register: 0x04
SCSI Chip ID (SCID)
Read/Write
R Reserved 7
RRE Enable Response to Reselection 6
When this bit is set, the LSI53C875A is enabled to
respond to bus-initiated reselection at the chip ID in the
Response ID Zero (RESPID0) and Response ID One
(RESPID1) registers. Note that the chip does not
automatically reconfigure itself to the initiator mode as a
result of being reselected.
SRE Enable Response to Selection 5
When this bit is set, the LSI53C875A is able to respond
to bus-initiated selection at the chip ID in the RESPID0
and RESPID1 registers. Note that the chip does not
automatically reconfigure itself to target mode as a result
of being selected.
R Reserved 4
ENC Encoded Chip SCSI ID [3:0]
These bits are used to store the LSI53C875A encoded
SCSI ID. This is the ID which the chip asserts when
arbitrating for the SCSI bus. The IDs that the
LSI53C875A responds to when selected or reselected
areconfiguredintheResponse ID Zero (RESPID0) and
Response ID One (RESPID1) registers. The priority of
the16possibleIDs,indescendingorderis:
76543 0
R RRE SRE RENC
x00x0000
Highest Lowest
7654321015141312111098