LSI 53C810A User Manual
5-15
the LSI53C810A. These bits determine the
LSI53C810A’s method of transfer for Data-In and
Data-Out phases only; all other information transfers
occur asynchronously.
LSI53C810A’s method of transfer for Data-In and
Data-Out phases only; all other information transfers
occur asynchronously.
Register: 0x06 (0x86)
SCSI Destination ID (SDID)
Read/Write
Read/Write
R
Reserved
[7:3]
ENC[2:0]
Encoded destination SCSI ID
[2:0]
Writing these bits sets the SCSI ID of the intended
initiator or target during SCSI reselection or selection
phases, respectively. When executing SCRIPTS, the
SCRIPTS processor writes the destination SCSI ID to
this register. The SCSI ID is defined by the user in a
SCRIPTS Select or Reselect instruction. The value
written should be the binary-encoded ID value. The
priority of the 8 possible IDs, in descending order, is:
initiator or target during SCSI reselection or selection
phases, respectively. When executing SCRIPTS, the
SCRIPTS processor writes the destination SCSI ID to
this register. The SCSI ID is defined by the user in a
SCRIPTS Select or Reselect instruction. The value
written should be the binary-encoded ID value. The
priority of the 8 possible IDs, in descending order, is:
Table 5.5
SCSI Synchronous Offset Values
MO3
MO2
MO1
MO0
Synchronous Offset
0
0
0
0
0-Asynchronous
0
0
0
1
1
0
0
1
0
2
0
0
1
1
3
0
1
0
0
4
0
1
0
1
5
0
1
1
0
6
0
1
1
1
7
1
0
0
0
8
1
x
x
1
Reserved
1
x
1
x
Reserved
1
1
x
x
Reserved
7
3
2
0
R
ENC[3:0]
x
x
x
x
x
0
0
0
Highest
Lowest
7
6
5
4
3
2
1
0