Cirrus-logic CS4382A Instrukcja Użytkownika Pobierz pdf (Strona 39)

DS618F2 39

CS4382A

6.6.2 ATAPI Channel Mixing and Muting (ATAPI)

Default = 01001 - AOUTAx=aL, AOUTBx=bR (Stereo)

Function:

The CS4382A implements the channel mixing functions of the ATAPI CD-ROM specification. The ATAPI

functions are applied per A-B pair. Refer to Table 7 and Figure 14 for additional information.

ATAPI4 ATAPI3 ATAPI2 ATAPI1 ATAPI0 AOUTAx AOUTBx

00000 MUTE MUTE

00001 MUTE bR

00010 MUTE bL

0 0 0 1 1 MUTE b[(L+R)/2]

00100 aR MUTE

00101 aR bR

00110 aR bL

0 0 1 1 1 aR b[(L+R)/2]

01000 aL MUTE

01001 aL bR

01010 aL bL

0 1 0 1 1 aL b[(L+R)/2]

01100 a[(L+R)/2] MUTE

01101 a[(L+R)/2] bR

01110 a[(L+R)/2] bL

0 1 1 1 1 a[(L+R)/2] b[(L+R)/2]

10000 MUTE MUTE

10001 MUTE bR

10010 MUTE bL

1 0 0 1 1 MUTE [(aL+bR)/2]

10100 aR MUTE

10101 aR bR

10110 aR bL

1 0 1 1 1 aR [(bL+aR)/2]

11000 aL MUTE

11001 aL bR

11010 aL bL

1 1 0 1 1 aL [(aL+bR)/2]

11100 [(aL+bR)/2] MUTE

11101 [(aL+bR)/2] bR

11110 [(bL+aR)/2] bL

1 1 1 1 1 [(aL+bR)/2] [(aL+bR)/2]

Table 7. ATAPI Decode

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 49 50

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Cirrus-logic CS4382A Instrukcja Użytkownika Strona 39