Avago Technologies LSI8751D User Manual
Page 184
5-68
SCSI Operating Registers
HTHSF
Handshake-to-Handshake Timer Scale Factor
4
Setting this bit causes this timer to shift by a factor of 16.
GEN[3:0]
General Purpose Timer Period
[3:0]
These bits select the period of the general purpose timer.
The time measured is the time between enabling and
disabling of the timer. When this timing is exceeded, the
HTH [7:4]
SEL [3:0]
GEN [3:0]
Minimum Time-out
1
(80 MHz Clock)
1. These values will be correct if the CCF bits in the
register are set according to the valid combinations in the bit
description.
GENSF = 0
GENSF = 1
0000
Disabled
Disabled
0001
125
µ
s
2 ms
0010
250
µ
s
4 ms
0011
500
µ
s
8 ms
0100
1
µ
s
16 ms
0101
2 ms
32 ms
0110
4 ms
64 ms
0111
8 ms
128 ms
1000
16 ms
256 ms
1001
32 ms
512 ms
1010
64 ms
1 s
1011
128 ms
2 s
1100
256 ms
4.1 s
1101
512 ms
8.2 s
1110
1.024 s
16.4 s
1111
2.048 s
32.8 s