Read TOC
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2.28
Read TOC (43h)
Operation Code is (43h).
The READ TOC command requests the target transfers data from the table of contents to the
initiator.
This command has been modified from the SCSI-2 READ TOC command with the addition of
the Format field to support multi-session discs.
Format field
Definition
00b
Same as SCSI-2. The Start Track Field specifies the starting track number
for which the data will be returned. For multi-session discs, this command
will return the TOC data for all sessions.
01b
This format returns the first session number, last session number and the
starting address of the last session. The Start Track field is reserved and
should be set to zero.
10b
All Sub-Channel Q code information.(DRM-602X only)
11b
Reserved.
The Start Track field specifies the starting track number for which the data shall be returned. If
this value is zero, the table of contents data shall begin with the first track on the medium. The
data is returned in contiguous ascending track number order.
If the Start Track field is not valid for the currently installed medium, the command shall be
terminated with Check Condition status. The sense key shall be set to ILLEGAL REQUEST and
the additional sense code set to INVALID FIELD IN CDB.
IMPLEMENTORS NOTE: The maximum TOC data length possible on currently available CD-
ROM media is 804 bytes, or 100 TOC track descriptors.
The TOC data block contains a four byte header followed by zero or more TOC track descriptors.
The TOC data length specifies the length in bytes of the following TOC data that is available to
be transferred during the DATA IN phase. The TOC data length value does not include the TOC
data length field itself.
The first track number field indicates the first track number in the table of contents. The last
track number field indicates the last track number in the table of contents before the lead-out
track number.
Summary of Contents for DR-706S
Page 2: ...CD ROM SCSI 2 Command Set R e f e r e n c e M a n u a l V e r s i o n 3 1 OB U0077C ...
Page 36: ...Inquiry 23 this page has been left intentionally blank ...
Page 106: ...Read CD ROM Capacity 93 this page has been left intentionally blank ...
Page 124: ...Read Sub Channel 111 this page has been left intentionally blank ...
Page 130: ...Read TOC 117 this page has been left intentionally blank ...
Page 140: ...Request Sense 127 this page has been left intentionally blank ...
Page 172: ...Read CD DA 159 this page has been left intentionally blank ...