SCSI Registers
4-69
SEL
Selected
5
When set, this bit indicates the LSI53C1000 is selected
by a SCSI initiator device. For this to occur, set the
Enable Response to Selection bit in the
register.
RSL
Reselected
4
When set, this bit indicates the LSI53C1000 is reselected
by a SCSI target device. For this to occur, set the Enable
Response to Reselection bit in the
register.
SGE
SCSI Gross Error
3
The following conditions are considered SCSI Gross
Errors:
•
Offset Underflow occurs in target mode when a
SACK/ signal is received before the corresponding
SREQ/ signal has been sent.
•
Offset Overflow occurs in initiator mode when an
SREQ/ signal is received and causes the maximum
offset, as defined by the MO[5:0] bits in the SXFER
register, to be exceeded.
•
In initiator mode, a phase change occurs with an
outstanding SREQ/SACK offset.
•
Residual Data in SCSI FIFO occurs when a transfer
other than Synchronous Data Received is started with
data left in the SCSI Synchronous Receive FIFO.
•
Multiple CRC Requests occur when, during a
synchronous DT transfer, multiple CRC requests are
received within the same offset.
•
A request for a Pad CRC word is received without the
subsequent CRC word requests.
•
A phase change occurs without a CRC Request.
Note:
Checking for this condition can be disabled by setting the
DISCRC bit in the CRCCNTL0 register.
•
An illegal Force CRC Request Block Move is
executed.
•
A SCRIPTS RAM parity error.
Содержание LSI53C1000
Страница 6: ...vi Preface...
Страница 16: ...xvi Contents...
Страница 28: ...1 12 Introduction...
Страница 234: ...4 124 Registers...
Страница 314: ...6 40 Specifications This page intentionally left blank...
Страница 318: ...6 44 Specifications This page intentionally left blank...
Страница 344: ...6 70 Specifications This page intentionally left blank...
Страница 350: ...6 76 Specifications Figure 6 42 LSI53C1000 329 Ball Grid Array Bottom view...
Страница 352: ...6 78 Specifications...
Страница 360: ...A 8 Register Summary...
Страница 376: ...IX 12 Index...