LSI53C825AJ LSI, LSI53C825AJ Datasheet - Page 172
LSI53C825AJ
Manufacturer Part Number
LSI53C825AJ
Description
Manufacturer
LSI
Datasheet
1.LSI53C825AJ.pdf
(306 pages)
Specifications of LSI53C825AJ
Lead Free Status / RoHS Status
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4-84
Register: 0x49 (0xC9)
SCSI Timer One (STIME1)
Read/Write
R
HTHBA
GENSF
Registers
R
7
x
HTHBA
6
0
Reserved
Handshake-to-Handshake Timer Bus Activity
Enable
Setting this bit causes this timer to begin testing for SCSI
REQ/ and ACK/ activity as soon as SBSY/ is asserted,
regardless of the agents participating in the transfer.
General Purpose Timer Scale Factor
Setting this bit causes this timer to shift by a factor of 16.
See
Table 4.8
HTH[7:4], SEL[3:0],
GENSF
Table 4.8
5
0
GEN[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
HTHSF
Timeout Periods, 50 MHz Clock
for Timeout Periods, 50 MHz clock.
4
0
1
3
0
GENSF = 0
102.4 ms
204.8 ms
Disabled
12.8 ms
25.6 ms
51.2 ms
100 s
200 s
400 s
800 s
1.6 ms
3.2 ms
6.4 ms
Minimum Timeout
(50 MHz Clock)
0
GEN[3:0]
GENSF = 1
0
102.4 ms
204.8 ms
409.6 ms
819.2 ms
Disabled
12.8 ms
25.6 ms
51.2 ms
1.6 ms
3.2 ms
6.4 ms
3.2 s
1.6 s
2
0
0
7
6
5
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