Updated address (ua), Registers: 0xcc–0xcf – Avago Technologies LSI53C1000R User Manual
Page 229
SCSI Registers
4-117
Version 2.2
Copyright © 2000–2003 by LSI Logic Corporation. All rights reserved.
Registers: 0xCC–0xCF
Updated Address (UA)
Read/Write
UA
Updated Address
[31:0]
This register contains the updated data address for the
BMOV that was executing when the phase mismatch
occurred.
In the case of a SCSI data receive, if there is a byte in
the
register, then this
address points to the location where that byte must be
stored. The SWIDE byte must be manually written to
memory and this address must be incremented prior to
updating any scatter/gather entry.
In the case of a SCSI data receive, if there is not a byte
in the SWIDE register, then this address is the next
location that should be written to when this I/O restarts.
No manual flushing is necessary.
In the case of a SCSI data send, all data sent to the SCSI
bus is accounted for and any data left in the part is
ignored and is automatically cleared from the FIFOs.
31
0
UA
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0