Table 2.4 scsi parity control, Table 2.5 scsi parity errors and interrupts, Scsi parity control – Avago Technologies LSI53C896 User Manual
Page 57: Scsi parity errors and interrupts, Table 2.4, Table 2.5
SCSI Functional Description
2-29
Version 3.3
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Table 2.4
SCSI Parity Control
EPC
1
1. EPC = Enable Parity Checking (bit 3
ASEP
2
2. ASEP = Assert SCSI Even Parity (bit 2
).
Description
0
0
Does not check for parity errors. Parity is generated when sending SCSI data.
Asserts odd parity when sending SCSI data.
0
1
Does not check for parity errors. Parity is generated when sending SCSI data.
Asserts even parity when sending SCSI data.
1
0
Checks for odd parity on SCSI data received. Parity is generated when
sending SCSI data. Asserts odd parity when sending SCSI data.
1
1
Checks for odd parity on SCSI data received. Parity is generated when
sending SCSI data. Asserts even parity when sending SCSI data.
Table 2.5
SCSI Parity Errors and Interrupts
DHP
1
1. DHP = Disable Halt on SATN/ or Parity Error (bit 5
).
PAR
2
2. PAR = Parity Error (bit 0
SCSI Interrupt Enable One (SIEN1)
).
Description
0
0
Halts when a parity error occurs in the target or initiator mode and does not
generate an interrupt.
0
1
Halts when a parity error occurs in the target mode and generates an
interrupt in the target or initiator mode.
1
0
Does not halt in target mode when a parity error occurs until the end of the
transfer. An interrupt is not generated.
1
1
Does not halt in target mode when a parity error occurs until the end of the
transfer. An interrupt is generated.