Scsi transfer (sxfer), Scsi, Transfer (sxfer) – LSI 53C810A User Manual
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5-12
Operating Registers
R
Reserved
[4:3]
ENC[2:0]
Encoded LSI53C810A Chip SCSI ID
[2:0]
These bits are used to store the LSI53C810A encoded
SCSI ID. This is the ID which the chip asserts when
arbitrating for the SCSI bus. The IDs that the
LSI53C810A responds to when being selected or
reselected are configured in the
register. The priority of the 8 possible IDs, in descending
order is:
Register: 0x05 (0x85)
SCSI Transfer (SXFER)
Read/Write
When using Table Indirect I/O commands, bits [7:0] of this register are
loaded from the I/O data structure.
Note:
For additional information on how the synchronous transfer
rate is determined, refer to
Chapter 2, “Functional Descrip-
TP[2:0]
SCSI Synchronous Transfer Period
[7:5]
These bits determine the SCSI synchronous transfer
period (XFERP) used by the LSI53C810A when sending
synchronous SCSI data in either the initiator or target
mode. These bits control the programmable dividers in
the chip.
Highest
Lowest
7
6
5
4
3
2
1
0
7
5
4
3
0
TP[2:0]
R
MO[3:0]
0
0
0
x
0
0
0
0