CS4351(2004) View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

CS4351
(Rev.:2004)

192 kHz Stereo DAC with 2 Vrms Line Out

Cirrus Logic 

CS4351

6.4 Mute Control - Register 04h

7

AMUTE

1

6

Reserved

0

5

MUTEC A=B

0

4

MUTE_A

0

3

MUTE_B

0

2

Reserved

0

1

Reserved

0

0

Reserved

0

6.4.1 AUTO-MUTE (AMUTE) BIT 7

Function:

When set to 1 (default) the Digital-to-Analog converter output will mute following the reception of 8192

consecutive 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 and the Mute Control pin will go active during the mute period.

When set to 0 this function is disabled

6.4.2 AMUTEC = BMUTEC (MUTEC A=B) BIT 5

Function:

When set to 0 (default) the AMUTEC and BMUTEC pins operate independently.

When set to 1, the individual controls for AMUTEC and BMUTEC are internally connected through an

AND gate prior to the output pins. Therefore, the external AMUTEC and BMUTEC pins will go active only

when the requirements for both AMUTEC and BMUTEC are valid.

6.4.3 A CHANNEL MUTE (MUTE_A) BIT 4

B CHANNEL MUTE (MUTE_B) BIT 3

Function:

When set to 1, the Digital-to-Analog converter output will mute. The quiescent voltage on the output will

be retained. The muting function is effected, similar to attenuation changes, by the Soft and Zero Cross

bits in the Volume and Mixing Control register. The corresponding MUTEC pin will go active following any

ramping due to the soft and zero cross function.

When set to 0 (default) this function is disabled.

DS566PP2

31

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