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5.SCSI Interface
ERASE
INQUIRY
LOAD/UNLOAD
LOCATE
LOG SELECT
LOG SENSE
MODE SELECT(6)
MODE SENSE(6)
PERSISTENT RESERVE IN
PERSISTENT RESERVE OUT
PREVENT ALLOW MEDIUM REMOVAL
READ
READ BLOCK LIMITS
READ BUFFER
READ POSITION
RECEIVE DIAGNOSTIC RESULTS
RELEASE UNIT
REPORT DENSITY SUPPORT
REPORT LUNS
REQUEST SENSE
RESERVE UNIT
REWIND
SEEK BLOCK
SEND DIAGNOSTIC
SPACE
TEST UNIT READY
VERIFY
WRITE
WRITE BUFFER
WRITE FILEMARKS
For implementation details on these commands, see the Command Section 6. The following Optional commands are
NOT supported.
- CHANGE DEFINITION
- COMPARE
- COPY AND VERIFY
- 10 byte MODE SENSE & MODE SELECT
- READ REVERSE
- TRACK SELECT (SCSI-1 optional command, not applicable to the SDX-250V)
5.2. SCSI Bus Operation
Typical SCSI Operation
5.2.1.
This example describes the typical SCSI bus sequence between the host and the drive.
After waiting for the bus clear time the Host arbitrates for the SCSI bus. It does this by asserting BSY and the
1.
data line corresponding to its bus ID. If any other devices wish to compete for the bus, they also assert BSY
and the appropriate data line. Each arbitrating device then inspects the data bus. The device with the highest
ID wins the bus. All the other devices must release BSY and their data lines.
5-2
Table 5-1: Supported SCSI Commands
Command Name
Operation Code
SONY AIT-E Turbo drive SDX-250V series Ver.1.0
19h
12h
1Bh
2Bh
4Ch
4Dh
15h
1Ah
5Eh
5Fh
1Eh
08h
05h
3Ch
34h
1Ch
17h
44h
A0h
03h
16h
01h
0Ch
1Dh
11h
00h
13h
0Ah
3Bh
10h
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