Avago Technologies LSI53C825AE - Manual (Page 122)

4-34 Registers
MO[4:0] Max SCSI Synchronous Offset [4:0]
These bits describe the maximum SCSI synchronous
offset used by the LSI53C825A when transferring
synchronous SCSI data in either the initiator or target
mode.
Table 4.6 describes the possible combinations and
their relationship to the synchronous data offset used by
the LSI53C825A. These bits determine the LSI53C825A
method of transfer for Data In and Data Out phases only;
all other information transfers occur asynchronously.
Table 4.6 Maximum Synchronous Offset
MO4 MO3 MO2 MO1 MO0 Synchronous Offset
0 0 0 0 0 0-Asynchronous
0 0 0 0 1 1
0 0 0 1 0 2
0 0 0 1 1 3
0 0 1 0 0 4
0 0 1 0 1 5
0 0 1 1 0 6
0 0 1 1 1 7
0 1 0 0 0 8
0 1 0 0 1 9
0 1 0 1 0 10
0 1 0 1 1 11
0 1 1 0 0 12
0 1 1 0 1 13
0 1 1 1 0 14
0 1 1 1 1 15
1 0 0 0 0 16
1 x x x 1 Reserved
1 x x 1 x Reserved
1 x 1 x x Reserved
1 1 x x x Reserved