LSI53C825AJ LSI, LSI53C825AJ Datasheet - Page 199
LSI53C825AJ
Manufacturer Part Number
LSI53C825AJ
Description
Manufacturer
LSI
Datasheet
1.LSI53C825AJ.pdf
(306 pages)
Specifications of LSI53C825AJ
Lead Free Status / RoHS Status
Not Compliant
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I/O Instruction
1. The LSI53C825A arbitrates for the SCSI bus by
2. If the LSI53C825A wins arbitration, it attempts to
3. If the LSI53C825A is selected or reselected before
Target Mode
OPC2 OPC1 OPC0
0
0
0
0
1
Reselect Instruction
Disconnect Instruction
The LSI53C825A disconnects from the SCSI bus by
deasserting all SCSI signal outputs.
asserting the SCSI ID stored in the
(SCID)
during the next available arbitration cycle without
reporting any lost arbitration status.
reselect the SCSI device whose ID is defined in the
destination ID field of the instruction. Once the
LSI53C825A wins arbitration, it fetches the next
instruction from the address pointed to by the
SCRIPTS Pointer (DSP)
SCRIPTS can move on to the next instruction before
the reselection completes. It continues executing
SCRIPTS until a SCRIPT that requires a response
from the Initiator is encountered.
winning arbitration, it fetches the next instruction from
the address pointed to by the 32-bit jump address
field stored in the
Manually set the LSI53C825A to Initiator mode if it is
reselected, or to Target mode if it is selected.
0
0
1
1
0
register. If it loses arbitration, it tries again
0
1
0
1
0
DMA Next Address (DNAD)
Instruction Defined
Reselect
Disconnect
Wait Select
Set
Clear
register. This way the
SCSI Chip ID
register.
DMA
5-15
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