CS4351_05 Datasheet, PDF (26/37 Pages) Cirrus Logic – 192 kHz Stereo DAC with 2 Vrms Line Out

6.3.4
CS4351
ATAPI Channel Mixing and Muting (ATAPI3:0) Bits 3-0
Default = 1001 - AOUTA=aL, AOUTB=bR (Stereo)
Function:
The CS4351 implements the channel mixing functions of the ATAPI CD-ROM specification. Refer to
Table 8 and Figure 12 for additional information.
Left Channel
Audio Data
A Channel
Volume
Control
MUTE _AoutA
Σ
Σ
Right Channel
Audio Data
B Channel
Volume
Control
Figure 12. ATAPI Block Diagram
MUTE _AoutB
ATAPI3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
ATAPI2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
ATAPI1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
ATAPI0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
AOUTA
MUTE
MUTE
MUTE
MUTE
aR
aR
aR
aR
aL
aL
aL
aL
a[(L+R)/2]
a[(L+R)/2]
a[(L+R)/2]
a[(L+R)/2]
Table 8. ATAPI Decode
AOUTB
MUTE
bR
bL
b[(L+R)/2]
MUTE
bR
bL
b[(L+R)/2]
MUTE
bR
bL
b[(L+R)/2]
MUTE
bR
bL
b[(L+R)/2]
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