CS43L22 datasheet(46/68 Pages) CIRRUS

46 / 68 page

DS792F1

CS43L22

Confidential Draft

10/7/08

7.11.6

Digital Zero Cross

Configures when the signal level changes occur for the digital volume controls.

Notes:

If the signal does not encounter a zero crossing, the requested volume change will occur after a

timeout period between 1024 and 2048 sample periods (21.3 ms to 42.7 ms at 48 kHz sample rate).

The zero cross function is independently monitored and implemented for each channel.

The DIS_LIMSFT bit (“Limiter Soft Ramp Disable” on page 54) is ignored when zero cross is enabled.

7.12

Playback Control 2 (Address 0Fh)

7.12.1

Headphone Mute

Configures a digital mute on headphone channel x.

7.12.2

Speaker Mute

Configures a digital mute on speaker channel x.

7.12.3

Speaker Volume Setting B=A

Configures independent or ganged volume control of the speaker volume. Mute is not affected.

7.12.4

Speaker Channel Swap

Configures a channel swap on the speaker channels.

DIGZC

Volume Changes

Affected Digital Volume Controls

Do not occur on a zero cross-

ing

MSTxMUTE (“Master Playback Mute” on page 44),

HPxMUTE, SPKxMUTE (“Playback Control 2 (Address 0Fh)” on page 46),

PCMxMUTE, PCMxVOL[7:0] (“PCM Channel x Volume” on page 48),

MSTxVOL[7:0] (“Master Volume Control” on page 52),

HPxVOL[7:0] (“Headphone Volume Control” on page 52),

SPKxVOL[7:0] (“Speaker Volume Control” on page 53),

Occur on a zero crossing

543

HPBMUTE

HPAMUTE

SPKBMUTE

SPKAMUTE

SPKB=A

SPKSWAP

SPKMONO

MUTE50/50

HPxMUTE

Headphone Mute

Disabled

Enabled

SPKxMUTE

Speaker Mute

Disabled

Enabled

SPKB=A

Single Volume Control for the Speaker Channel

Disabled

Enabled

SPKSWAP

Speaker Output

Channel A

Channel B

Application:

“Mono Speaker Output Configuration” on page 28

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