CS42L52 datasheet(53/82 Pages) CIRRUS

53 / 82 page

DS680A1

CS42L52

6.13.5 Digital Soft Ramp

Configures an incremental volume ramp from the current level to the new level at the specified rate.

6.13.6 Digital Zero Cross

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

Notes:

1. 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).

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

3. The DIS_LIMSFT bit (“Limiter Soft Ramp Disable” on page 65) is ignored when zero cross is enabled.

6.14 Playback Control 2 (Address 0Fh)

6.14.1 Headphone Mute

Configures a digital mute on headphone channel x.

6.14.2 Speaker Mute

Configures a digital mute on speaker channel x.

DIGSFT

Volume Changes

Affected Digital Volume Controls

Do not occur on a zero cross-

ing

MSTxMUTE (“Master Playback Mute” on page 51),

HPxMUTE, SPKxMUTE (“Playback Control 2 (Address 0Fh)” on page 53),

ADCxVOL[7:0] (“ADCx Volume” on page 57),

AMIXxMUTE, AMIXxVOL[7:0] (“ADC Mixer Channel x Volume” on page 58),

PMIXxMUTE, PMIXxVOL[7:0] (“PCM Mixer Channel x Volume” on page 58),

MSTxVOL[7:0] (“Master Volume Control” on page 63),

HPxVOL[7:0] (“Headphone Volume Control” on page 63),

SPKxVOL[7:0] (“Speaker Volume Control” on page 64),

ALC and Limiter Attack/Release (page 66 to page 68)

Occur on a zero crossing

Ramp Rate:

1/8 dB every LRCK cycle

DIGZC

Volume Changes

Affected Digital Volume Controls

Do not occur on a zero cross-

ing

MSTxMUTE (“Master Playback Mute” on page 51),

HPxMUTE, SPKxMUTE (“Playback Control 2 (Address 0Fh)” on page 53),

ADCxVOL[7:0] (“ADCx Volume” on page 57),

AMIXxMUTE, AMIXxVOL[7:0] (“ADC Mixer Channel x Volume” on page 58),

PMIXxMUTE, PMIXxVOL[7:0] (“PCM Mixer Channel x Volume” on page 58),

MSTxVOL[7:0] (“Master Volume Control” on page 63),

HPxVOL[7:0] (“Headphone Volume Control” on page 63),

SPKxVOL[7:0] (“Speaker Volume Control” on page 64),

ALC and Limiter Attack/Release (page 66 to page 68)

Occur on a zero crossing

432

HPBMUTE

HPAMUTE

SPKBMUTE

SPKAMUTE

SPKB=A

SPKSWAP

SPKMONO

MUTE50/50

HPxMUTE

Headphone Mute

Disabled

Enabled

SPKxMUTE

Speaker Mute

Disabled

Enabled

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