Play Audio Msf Command - Sony CDU-541 Interface Manual

CDU-541 CD-ROM DRIVE SCSI INTERFACE MANUAL
The logical block address field specifies the logical block at which the
audio play back operation shall begin.
The transfer length field specifies the number of contiguous logical blocks
that shall be played. A transfer length field of zero indicates that no audio
operation shall occur. This condition shall not be considered as an error.
Any other value indicates the number of logical blocks that shall be played.
NOTE: A logical block length not equal to the sector size may cause the
starting logical block address and the transfer length to be adjusted by the
target. In most targets, a starting logical address that occurs within a
sector causes audio play to start at the beginning of that sector. Many
targets play any partial audio sector beyond the end of the requested transfer
length.
NOTE: When the immideate bit in MODE SELECT PAGE CODE
9
is set to one, the
command will be terminated at the address specified by the starting logical
block address. When it is set to zero, the command will be terminated at the
stop address. or an error makes the command be terminated.
5.2.8. PLAY AUDIO MSF Command
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Bit!
7
6
5
4
3 2
1
o
Byte
1
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o
Operation Code (47h)
-----1-----------------------------------------------------------------------
1
1
Logical Unit Number
1
Reserved
-----1-----------------------------------------------------------------------
2
I
Reserved
-----1-----------------------------------------------------------------------,
3 I
Starting Minutes
I
-----1-----------------------------------------------------------------------1
4
I
Starting Seconds
I
-----1-----------------------------------------------------------------------1
5 I
Starting Frame
I
-----1-----------------------------------------------------------------------1
6 I
Ending Minutes
I
-----1-----------------------------------------------------------------------1
7 I
Ending Seconds
1
-----1-----------------------------------------------------------------------1
8 :
Ending Frame 1
-----1-----------------------------------------------------------------------1
9 I
Control Byte
1
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