CS4525(2008) 데이터 시트보기 (PDF) - Cirrus Logic

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CS4525
(Rev.:2008)

30 W Digital Audio Amplifier with Integrated ADC

Cirrus Logic 

9.1.4

HP_Detect/Mute Pin Active Logic Level (HP/MutePol)

Default = 0

Function:

This bit determines the active logic level for the HP_DETECT/MUTE input signal.

HP/MutePol Setting

Headphone Detect/Mute Input Polarity

0 .......................................... Active low.

1 .......................................... Active high.

CS4525

9.1.5

HP_Detect/Mute Pin Mode (HP/Mute)

Default = 0

Function:

Configures the function of HP_DETECT/MUTE input pin. See “Headphone Detection & Hardware Mute

Input” on page 51 for more information.

HP/Mute Setting

HP_DETECT/MUTE Pin Function

0 .......................................... Mute input signal.

1 .......................................... Headphone detect input signal.

9.1.6

Modulator Phase Shifting (PhaseShift)

Default = 0

Function:

When enabled, forces the output of the PWM modulator to output differential signals which are the inverse

of each other and have been phase shifted by 180 degrees. This causes, for instance, the differential sig-

nal pair to be exactly in phase with one another during a mute condition, thereby reducing the amount of

switching current through the load.

PhaseShift Setting

Modulator Phase Shift State

0 .......................................... 180º phase shift disabled.

1 .......................................... 180º phase shift enabled.

9.1.7

AM Frequency Shifting (FreqShift)

Default = 0

Function:

Controls the state of the PWM AM frequency shift feature. See “PWM AM Frequency Shift” on page 51

for more information.

FreqShift Setting

AM Frequency Shift State

0 .......................................... Frequency shift disabled.

1 .......................................... Frequency shift enabled.

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DS726PP3

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