CDU-541
CD-ROM
DRIVE
SCSI
INTERFACE
MANUAL
5.2.6.
PLAY
AUDIO
Co_and
==============================================================================
~~-
Bitl
Byte 1
7
6
5
4
3
2
1 o
==============================================================================
o 1
Operation
Code (C8h) 1
-----1-----------------------------------------------------------------------1
ilLogical
Unit
Number:
Reserved 1
-----1-----------------------------------------------------------------------1
2 1 (MSB) I
-----1--- ---I
3 1 I
-----1---
Logical
Block Address ---I
4 I 1
-----1--- ---I
5 1 (LSB) I
-----1-----------------------------------------------------------------------1
6 I
Reserved
1
-----1-----------------------------------------------------------------------1
7 I
(MSB)
1
-----1---
Transfer
Length ---I
8 1
(LSB)
1
-----1-----------------------------------------------------------------------1
9 1 -
Control
Byte
1
==============================================================================
The
PLAY
AUDIO
command
requests
that
the
target
play
audio
starting
at
the
specified
logical
block
address
for
the
specified
transfer
length.
The
audio
is
output
as
specified
by
the
audio
control
parameters.
This
command
returns
the
status
byte
when
the
address
requested
is
found.
If
the
address
is
not
found ,
or
if
the
ready
condition
does
not
exist,
or
if
the
address
is
not
within
an
audio
track,
a
CHECK
CONDITION
status
will
be
returned
and
the
appropriate
sense
key
set.
If
the
transfer
length
is
zero
this
command
seeks
to
the
specified
logical
block
address
and
enters
the
hold
track
state.
The
drive
is
in
a
pause
condition,
issuing
a
PAUSE
command
with
the
pause
bit
set
to
zero
will
begin
audio
play.
5-16
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