LSI53C875 LSI Logic, LSI53C875 Datasheet - Page 184
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LSI53C875
Manufacturer Part Number
LSI53C875
Description
PCI to Ultra SCSI I/O Processor
Manufacturer
LSI Logic
Datasheet
1.LSI53C875.pdf
(314 pages)
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5-68
1. These values will be correct if the CCF bits in the
HTHSF
GEN[3:0]
SCSI Operating Registers
GEN [3:0]
SEL [3:0]
HTH [7:4]
(SCNTL3)
description.
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
register are set according to the valid combinations in the bit
Handshake-to-Handshake Timer Scale Factor
Setting this bit causes this timer to shift by a factor of 16.
General Purpose Timer Period
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
GENSF = 0
Disabled
128 ms
256 ms
512 ms
1.024 s
2.048 s
125 s
250 s
500 s
16 ms
32 ms
64 ms
2 ms
4 ms
8 ms
1 s
Minimum Time-out
(80 MHz Clock)
SCSI Control Three
1
GENSF = 1
Disabled
128 ms
256 ms
512 ms
16 ms
32 ms
64 ms
16.4 s
32.8 s
2 ms
4 ms
8 ms
4.1 s
8.2 s
1 s
2 s
[3:0]
4
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