Sony CDU-541 Interface Manual page 37

CDU-541 CD-ROM DRIVE SCSI INTERFACE MANUAL
5
.2.
5.
PAUSE/RESUME CollUlland
==============================================================================
Bitl
Byte
I
7
6
5
4
3
2
1
o
==============================================================================
o
I
I
Operation Code(4Bh)
-----1-----------------------------------------------------------------------1
1 : Logical Unit Number: Reserved :
-----1-----------------------------------------------------------------------1
2 : Reserved
I
-----1-----------------------------------------------------------------------1
3 1
Reserved :
-----j-----------------------------------------------------------------------1
4
I
Reserved
I
-----1-----------------------------------------------------------------------\
5 :
Reserved \
-----1-----------------------------------------------------------------------:
6
I
Reserved
I
-----1-----------------------------------------------------------------------1
7 :
Reserved :
-----1-----------------------------------------------------------------------:
8 :
Reserved : Resume
I
-----1-----------------------------------------------------------------------1
9 I
Control Byte
I
==============================================================================
The PAUSE/RESUME command requests that the target start or stop the current
audio play operation. This command is used with some commands,such as PLAY
AUDIO commands issued while the immediate bit of MODE SELECT PAGE CODE
9
is
set to one.
A resume bit of zero indicates that the drive enter the hold track
with the audio output muted after the current audio block is played.
bit of one indicates that the drive release the pause and begin play
block following the last block played.
state
A resume
at the
This command is terminated with CHECK CONDITION status if the resume bit is
zero and the audio play operation cannot be resumed (i.e. an audio play
operation has not been requested, or the requested audio play operation has
been completed.).
It shall not be considered an error to request a pause when a pause is
already in effect or to request a resume when a play operation is in progress.
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