CS42L50 datasheet(29/48 Pages) CIRRUS

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CS42L50

DS544PP1

4.2.24 ATAPI CHANNEL MIXING AND MUTING (ATAPI)

Default = 1001 - AOUTA/HP_A = L, AOUTB/HP_B = R (Stereo)

Function:

The CS42L50 implements the channel mixing functions of the ATAPI CD-ROM specification. Refer to

Table 5 and Figure 32 for additional information.

Note:

All mixing functions occur prior to the digital volume control.

4.2.25 Mode Control 2 (address 0Bh)

4.2.26 MASTER CLOCK DIVIDE ENABLE (MCLKDIV)

Default = 0

0 - Disabled

1 - Enabled

Function:

The MCLKDIV bit enables a circuit which divides the externally applied MCLK signal by 2 prior to all other

DAC circuitry.

4.2.27 LINE AMPLIFIER GAIN COMPENSATION (LINE)

Default = 00

00 - 0.785 x VA

01 - 0.943 x VA

10 - Reserved

ATAPI3

ATAPI2

ATAPI1

ATAPI0

AOUTA/HP_A

AOUTB/HP_B

0000

MUTE

0001

MUTE

0010

MUTE

0011

MUTE

[(L+R)/2]

0100

MUTE

0101

0110

0111

[(L+R)/2]

1000

MUTE

1001

1010

1011

[(L+R)/2]

1100

[(L+R)/2]

MUTE

1101

[(L+R)/2]

1110

[(L+R)/2]

1111

[(L+R)/2]

Table 5. ATAPI Decode

765

4321

MCLKDIV

LINE1

LINE0

RESERVED

DIF2

DIF1

DIF0

000

0000

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