Cirrus Logic CS4385A - Manual (Page 46)

46 DS837F2
CS4385A
7.10.2 ATAPI Channel Mixing and Muting (ATAPI)
Default = 01001 - AOUTAx=aL, AOUTBx=bR (Stereo)
Function:
The CS4385A implements the channel-mixing functions of the ATAPI CD-ROM specification. The ATAPI
functions are applied per A-B pair. Refer to
Table 9 and Figure 20 for additional information.
ATAPI4 ATAPI3 ATAPI2 ATAPI1 ATAPI0 AOUTAx AOUTBx
0 0 0 0 0 MUTE MUTE
0 0 0 0 1 MUTE bR
0 0 0 1 0 MUTE bL
0 0 0 1 1 MUTE b[(L+R)/2]
0 0 1 0 0 aR MUTE
0 0 1 0 1 aR bR
0 0 1 1 0 aR bL
0 0 1 1 1 aR b[(L+R)/2]
0 1 0 0 0 aL MUTE
0 1 0 0 1 aL bR
0 1 0 1 0 aL bL
0 1 0 1 1 aL b[(L+R)/2]
0 1 1 0 0 a[(L+R)/2] MUTE
0 1 1 0 1 a[(L+R)/2] bR
0 1 1 1 0 a[(L+R)/2] bL
0 1 1 1 1 a[(L+R)/2] b[(L+R)/2]
1 0 0 0 0 MUTE MUTE
1 0 0 0 1 MUTE bR
1 0 0 1 0 MUTE bL
1 0 0 1 1 MUTE [(bL+aR)/2]
1 0 1 0 0 aR MUTE
1 0 1 0 1 aR bR
1 0 1 1 0 aR bL
1 0 1 1 1 aR [(aL+bR)/2]
1 1 0 0 0 aL MUTE
1 1 0 0 1 aL bR
1 1 0 1 0 aL bL
1 1 0 1 1 aL [(aL+bR)/2]
1 1 1 0 0 [(aL+bR)/2] MUTE
1 1 1 0 1 [(aL+bR)/2] bR
1 1 1 1 0 [(bL+aR)/2] bL
1 1 1 1 1 [(aL+bR)/2] [(aL+bR)/2]
Table 9. ATAPI Decode Table