Scsi Synchronous Data Fifo Word Count - LSI LSI53C875A Technical Manual

4-44
synchronous data transfers, or up to 31 words for wide.
Values over 31 will not occur.
Table 4.6

SCSI Synchronous Data FIFO Word Count

FF4
(SSTAT2 bit 4)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
Registers
FF3 FF2 FF1
0 0 0
0 0 0
0 0 1
0 0 1
0 1 0
0 1 0
0 1 1
0 1 1
1 0 0
1 0 0
1 0 1
1 0 1
1 1 0
1 1 0
1 1 1
1 1 1
0 0 0
0 0 0
0 0 1
Bytes or Words
in the
FF0 SCSI FIFO
0 0
1 1
0 2
1 3
0 4
1 5
0 6
1 7
0 8
1 9
0 10
1 11
0 12
1 13
0 14
1 15
0 16
1 17
0 18