CS42438-CMZR(2006) 查看數據表（PDF） - Cirrus Logic

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CS42438-CMZR
(Rev.:2006)

108 dB, 192 kHz 6-In, 8-Out TDM CODEC

Cirrus Logic 

7.7.3

CS42438

Auto-Mute (AMUTE)

Default = 1

0 - Disabled

1 - Enabled

Function:

The Digital-to-Analog converters of the CS42438 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

6

5

4

3

2

1

0

AOUT8_MUTE AOUT7_MUTE AOUT6_MUTE AOUT5_MUTE AOUT4_MUTE AOUT3_MUTE AOUT2_MUTE AOUT1_MUTE

7.8.1

Independent Channel Mute (AOUTX_MUTE)

Default = 0

0 - Disabled

1 - Enabled

Function:

The respective Digital-to-Analog converter outputs of the CS42438 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- 0Fh)

7

6

5

4

3

2

1

0

AOUTx_VOL7 AOUTx_VOL6 AOUTx_VOL5 AOUTx_VOL4 AOUTx_VOL3 AOUTx_VOL2 AOUTx_VOL1 AOUTx_VOL0

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-

DS646F1

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