CS4525 datasheet(70/91 Pages) CIRRUS

70 / 91 page

DS726A1

CS4525

9.5.4

Enable Foldback Floor (EnFloor)

Default = 0

Function:

Controls the foldback attenuation floor feature. See “Thermal Foldback” on page 39 for more information.

9.5.5

Ramp Speed (RmpSpd[1:0])

Default = 11

Function:

Controls the PWM output ramp speed. See “PWM PopGuard Transient Control” on page 45 for more in-

formation.

9.6

Mixer / Pre-Scale Configuration (Address 06h)

9.6.1

Pre-Scale Attenuation (PreScale[2:0])

Default = 000

Function:

Controls the pre-scale attenuation level. See “Pre-Scaler” on page 29 for more information.

9.6.2

Right Channel Mixer (RChMix[1:0])

Default = 00

Function:

Controls the right channel mixer output. See “Channel Mixer” on page 30 for more information.

EnFloor Setting

Attenuation Floor

0 .......................................... No foldback attenuation floor imposed.

1 .......................................... Maximum foldback attenuation limited to -30 dB.

RmpSpd[1:0] Setting

Ramp Speed

00 ........................................ Approximately 0.70 seconds.

01 ........................................ Approximately 0.75 seconds.

10 ........................................ Approximately 0.85 seconds.

11......................................... Immediate. PWM PopGuard Disabled.

543

PreScale2

PreScale1

PreScale0

Reserved

RChMix1

RChMix0

LChMix1

LChMix0

PreScale[2:0] Setting

Pre-Scale Attenuation Setting

000 ...................................... No pre-scale attenuation applied.

001 ...................................... -2.0 dB

010 ...................................... -4.0 dB

......................................

100 ...................................... -8.0 dB

......................................

111 ....................................... -14.0 dB

RChMix[1:0] Setting

Right Channel Mixer Output on Channel B

00 ........................................ Right Channel

01 ........................................ (Left Channel + Right Channel) / 2

10 ........................................ (Left Channel + Right Channel) / 2

11......................................... Left Channel

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