LSI53C825AJ LSI, LSI53C825AJ Datasheet - Page 165

• Manufacturer Part Number: LSI53C825AJ
• Manufacturer: LSI

Specifications of LSI53C825AJ

• Lead Free Status / RoHS Status: Not Compliant

Register: 0x43 (0xC3)
SCSI Interrupt Status One (SIST1)
Read Only
Reading the
status of the various interrupt conditions, whether they are enabled in the
SCSI Interrupt Enable One (SIEN1)
indicates an occurrence of the corresponding condition.
Reading the SIST1 clears the interrupt condition.
R
STO
GEN
HTH
Operating Registers
7
x
SCSI Interrupt Status One (SIST1)
x
register) must be set for this bit to become active. The
LSI53C825A always generates parity when sending SCSI
data.
Reserved
Selection or Reselection Time-Out
The SCSI device which the LSI53C825A is attempting to
select or reselect does not respond within the
programmed time-out period. See the description of the
SCSI Timer Zero (STIME0)
information on the time-out timer.
General Purpose Timer Expired
This bit is set when the general purpose timer expires.
The time measured is the time between enabling and
disabling of the timer. See the description of the
Timer One (STIME1)
information on the general purpose timer.
Handshake-to-Handshake Timer Expired
This bit is set when the handshake-to-handshake timer
expires. The time measured is the SCSI Request to
Request (target) or Acknowledge-to-Acknowledge
(initiator) period. See the description of the
Zero (STIME0)
the handshake-to-handshake timer.
R
x
register, bits [7:4], for more information on
x
register or not. Each bit that is set
register, bits [3:0], for more
3
x
register, bits [3:0], for more
STO
register returns the
2
0
GEN
1
0
SCSI Timer
SCSI
HTH
0
0
[7:3]
4-77
2
1
0