CS42L52 查看數據表（PDF） - Cirrus Logic

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CS42L52

Low-power, Stereo CODEC w/ Headphone & Speaker Amps

Cirrus Logic 

5/13/08

CS42L52

input path. The PGAxSEL bits may be used to isolate the input signal(s) from the PGA outputs. When

the PGA is powered down, no input should be selected. Refer to “ADC Input Select” on page 48 and

“PGA Input Mapping” on page 49 for the required settings.

6.2.3

Power Down ADCx

Configures the power state of ADC channel x.

PDN_ADCx

0

1

Application

ADC Status

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“Analog In to Analog Out Passthrough” on page 32

Notes:

1. The CS42L52 employs a clever scheme for controlling the power to the ADC when PASSTHRU

(“Passthrough Analog” on page 52) and PDN_OVRD (“Power Down ADC Override” on page 43) are

enabled. Refer to the referenced application.

6.2.4

Power Down

Configures the power state of the entire CODEC.

PDN

0

1

CODEC Status

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6.3 Power Control 2 (Address 03h)

7

Reserved

6

Reserved

5

Reserved

4

OVRDB

3

OVRDA

2

PDN_MICB

1

PDN_MICA

0

PDN_BIAS

6.3.1

Power Down ADC Override

Configures an override of the power down control for ADCx.

OVRDx

0

1

Application

PDN_ADC Override

Disable

Enable

“Analog In to Analog Out Passthrough” on page 32

6.3.2

Power Down MICx

Configures the power state of the microphone pre-amplifier for channel x.

PDN_MICx

0

1

Application

MIC Pre-Amp Status

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“MIC Inputs” on page 27

6.3.3

Power Down MIC Bias

Configures the power state of the microphone bias circuit.

PDN_BIAS

0

1

MIC Bias Status

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DS680F1

43

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