Cirrus-logic CS4385A Instrukcja Użytkownika Pobierz pdf (Strona 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

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

00111 aR b[(L+R)/2]

01000 aL MUTE

01001 aL bR

01010 aL bL

01011 aL b[(L+R)/2]

0 1 1 0 0 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]

1 0 0 0 0 MUTE MUTE

10001 MUTE bR

10010 MUTE bL

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

10100 aR MUTE

10101 aR bR

10110 aR bL

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

11000 aL MUTE

11001 aL bR

11010 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

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 54 55

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Cirrus-logic CS4385A Instrukcja Użytkownika Strona 46