Fujitsu M3097DG Oem Manual page 151

A.4.10 SEND command
The following table shows the normal sequence of the SEND command when used with this
scanner.
Step Bus phase
1 BUS FREE
2 ARBITRATION
3 SELECTION
4 MESSAGE OUT
5 COMMAND
6 DATA OUT
7 STATUS
8 MESSAGE IN
9 BUS FREE
Initiator operation
Verifies bus free
Obtains bus-usage
right
Selects target
Selects logical unit
Specifies SEND
(CDB)
← →
Target operation
→
Drives BSY signal
→
→
→
Transfer data
←
Reports GOOD status
←
Reports Command Complete
Releases BSY signal
A.4 Commands
Appendix A-81