PRELIMINARY
AMD
Initiator Commands
CMD6 CMD5 CMD4
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
Target Commands
CMD6
0
0
0
0
0
0
0
0
0
0
0
0
0
CMD5
1
1
1
1
1
1
1
1
1
1
1
0
0
CMD4
0
0
0
0
0
0
0
0
0
0
0
0
0
Idle Commands
CMD6 CMD5
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
CMD4
0
0
0
0
0
0
0
0
General Commands
CMD6 CMD5 CMD4
0
0
0
0
0
0
0
0
0
0
0
0
CMD3
0
0
0
1
1
1
CMD3
0
0
0
0
0
0
0
1
1
1
1
0
0
CMD3
0
0
0
0
0
0
0
0
CMD3
0
0
0
0
CMD2
0
0
0
0
0
0
CMD2
0
0
0
0
1
1
1
0
0
0
0
1
1
CMD2
0
0
0
0
1
1
1
1
CMD2
0
0
0
0
CMD1
0
0
1
0
1
1
CMD1
0
0
1
1
0
0
1
0
0
1
1
0
0
CMD1
0
0
1
1
0
0
1
1
CMD1
0
0
1
1
CMD0
0
1
0
0
0
1
Command
Information Transfer
Initiator Command Complete Steps
Message Accepted
Transfer Pad Bytes
*Set ATN
*Reset ATN
CMD0
0
1
0
1
0
1
1
0
1
0
1
0
1
Command
Send Message
Send Status
Send Data
Disconnect Steps
Terminate Steps
Target Command Complete Steps
*Disconnect
Receive Message Steps
Receive Command
Receive Data
Receive Command Steps
*DMA Stop
Access FIFO Command
CMD0
0
1
0
1
0
1
0
1
Command
Reselect Steps
Select without ATN Steps
Select with ATN Steps
Select with ATN and Stop Steps
*Enable Selection/Reselection
Disable Selection/Reselection
Select with ATN3 Steps
Reselect with ATN3 Steps
CMD0
0
1
0
1
Command
*No Operation
*Clear FIFO
*Reset Device
Reset SCSI Bus
Note:
*Denotes commands which do not generate interrupts upon completion.
Am53CF94/Am53CF96
19