CS43L22 datasheet(44/66 Pages) CIRRUS

44 / 66 page

DS792F2

CS43L22

Confidential Draft

3/4/10

7.11

Miscellaneous Controls (Address 0Eh)

7.11.1

Passthrough Analog

Configures an analog passthrough from the analog inputs to the headphone/line outputs.

7.11.2

Passthrough Mute

Configures an analog mute on the channel x analog in to analog out passthrough.

7.11.3

Freeze Registers

Configures a hold on all register settings.

7.11.4

HP/Speaker De-Emphasis

Configures a 15

μs/50μs digital de-emphasis filter response on the headphone/line and speaker outputs.

7.11.5

Digital Soft Ramp

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

543

PASSTHRUB

PASSTHRUA

PASSBMUTE PASSAMUTE

FREEZE

DEEMPH

DIGSFT

DIGZC

PASSTHRUx

Analog In Routed to HP/Line Output

Disabled

Enabled

PASSxMUTE

Passthrough Mute

Disabled

Enabled

FREEZE

Control Port Status

Modifications may be made to all control port registers without the changes taking effect until after the

FREEZE is disabled.

DEEMPHASIS

Control Port Status

Disabled

Enabled

DIGSFT

Volume Changes

Affected Digital Volume Controls

Does not occur with a soft ramp MSTxMUTE (“Master Playback Mute” on page 43),

HPxMUTE, SPKxMUTE (“Playback Control 2 (Address 0Fh)” on page 45),

PCMxMUTE, PCMxVOL[7:0] (“PCM Channel x Volume” on page 47),

MSTxVOL[7:0] (“Master Volume Control” on page 51),

HPxVOL[7:0] (“Headphone Volume Control” on page 51),

SPKxVOL[7:0] (“Speaker Volume Control” on page 52),

Occurs with a soft ramp

Ramp Rate:

1/8 dB every LRCK cycle

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