User Manual

58 DS851F2

CS42L56

6.3.2 Power Down MIC Bias

Configures the power state of the microphone bias output.

6.3.3 Power Down ADC Charge Pump

Configures the power state of the ADC charge pump. For optimal ADC performance and power consump-

tion, set to 1b when VA > 2.1 V and set to 0b when VA < 2.1 V.

6.3.4 Power Down ADC x

Configures the power state of ADC channel x.

6.3.5 Power Down

Configures the power state of the entire CODEC.

6.4 Power Control 2 (Address 04h)

6.4.1 Headphone Power Control

Configures how the HPDETECT pin, controls the power for the headphone amplifier.

PDN_BIAS MIC Bias Status

0 Powered Up

1 Powered Down

PDN_CHRG ADC Charge Pump Status

0 Powered Up

1 Powered Down

PDN_ADCx ADC Status

0 Powered Up

1 Powered Down

PDN CODEC Status

0 Powered Up

1 Powered Down

76543210

PDN_HPB1 PDN_HPB0 PDN_HPA1 PDN_HPA0 PDN_LINB1 PDN_LINB0 PDN_LINA1 PDN_LINA0

PDN_HPx[1:0] Headphone Status

Headphone channel is ON when the HPDETECT pin, is LO.

Headphone channel is OFF when the HPDETECT pin, is HI.

Headphone channel is ON when the HPDETECT pin, is HI.

Headphone channel is OFF when the HPDETECT pin, is LO.

10 Headphone channel is always ON.

11 Headphone channel is always OFF.