CS42436 datasheet(47/61 Pages) CIRRUS

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DS647F2

CS42436

Function:

The Digital-to-Analog converters of the CS42436 will mute the output following the reception of 8192 con-

secutive audio samples of static 0 or -1. A single sample of non-static data will release the mute. Detection

and muting is done independently for each channel. The quiescent voltage on the output will be retained

during the mute period. The muting function is affected, similar to volume control changes, by the Soft and

Zero Cross bits (SZC[1:0]).

7.7.4

Mute ADC Serial Port (MUTE ADC_SP)

Default = 0

0 - Disabled

1 - Enabled

Function:

When enabled, the ADC Serial Port will be muted.

7.8

DAC Channel Mute (Address 07h)

7.8.1

Independent Channel Mute (AOUTX_MUTE)

Default = 0

0 - Disabled

1 - Enabled

Function:

The respective Digital-to-Analog converter outputs of the CS42436 will mute when enabled. The quies-

cent voltage on the outputs will be retained. The muting function is affected by the DAC Soft and Zero

Cross bits (DAC_SZC[1:0]).

7.9

AOUTX Volume Control (Addresses 08h-0D)

7.9.1

Volume Control (AOUTX_VOL[7:0])

Default = 00h

Function:

The AOUTx Volume Control registers allow independent setting of the signal levels in 0.5 dB increments

from 0 dB to -127.5 dB. Volume settings are decoded as shown in Table 8. The volume changes are im-

plemented as dictated by the Soft and Zero Cross bits (DAC_SZC[1:0]). All volume settings less than -

127.5 dB are equivalent to enabling the AOUTx_MUTE bit for the given channel.

432

Reserved

AOUT6_MUTE

AOUT5_MUTE

AOUT4_MUTE

AOUT3_MUTE

AOUT2_MUTE

AOUT1_MUTE

432

AOUTx_VOL7

AOUTx_VOL6

AOUTx_VOL5

AOUTx_VOL4

AOUTx_VOL3

AOUTx_VOL2

AOUTx_VOL1

AOUTx_VOL0

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