Dolby Laboratories DP524 - Manual (Page 33)

6-7
This command will return $FF if the decoder is in Test Tone mode or if the
decoder is in normal mode but does not have an input data clock that it can lock to.
Otherwise the returned data is as follows:
B7 B6 B5 B4 B3 B2 B1 B0
0 0 0 0 BR3 BR2 BR1 BR0
BR3 BR2 BR1 BR0 Bit Rate (total)
0 0 0 1 40k bits/sec
0 0 1 0 48k bits/sec
0 0 1 1 56k bits/sec
0 1 0 0 64k bits/sec
0 1 0 1 80k bits/sec
0 1 1 0 96k bits/sec
0 1 1 1 112k bits/sec
1 0 0 0 128k bits/sec
1 0 0 1 160k bits/sec
1 0 1 0 192k bits/sec
1 0 1 1 224k bits/sec
1 1 0 0 256k bits/sec
1 1 0 1 320k bits/sec
1 1 1 0 384k bits/sec
1 1 1 1 448k bits/sec
6.3.2 AC-3 Related commands
The following commands are only applicable to the AC-3 algorithm. If they are
issued when any other algorithm has been loaded, they will be ignored.
Command $40: High Level Dynamic Range control
$FB $20 $40 data $FD
Where data is a byte of value 0..$ff.
0 corresponds to a fractional control value of 0.0.
$ff correspods to a fractional control value of 0.996.
Command $41: Low Level Dynamic Range control
$FB $20 $41 data $FD
Where data is a byte of value 0..$ff.
0 corresponds to a fractional control value of 0.0.
$ff correspods to a fractional control value of 0.996.
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