CS4525(2008) 查看數據表（PDF） - Cirrus Logic

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CS4525
(Rev.:2008)

30 W Digital Audio Amplifier with Integrated ADC

Cirrus Logic 

9.5.4

CS4525

Foldback Attack Delay (AttackDly[1:0])

Default = 01

Function:

Controls the foldback attack delay. See “Thermal Foldback” on page 40 for more information.

AttackDly[1:0] Setting Foldback Attack Time

00 ........................................Approximately 0.5 seconds.

01 ........................................Approximately 1.0 seconds.

10 ........................................Approximately 1.5 seconds.

11.........................................Approximately 2.0 seconds.

9.5.5

Enable Foldback Floor (EnFloor)

Default = 0

Function:

Controls the foldback attenuation floor feature. See “Thermal Foldback” on page 40 for more information.

EnFloor Setting

Attenuation Floor

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

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

9.5.6

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.

RmpSpd[1:0] Setting Ramp Speed

00 ........................................Fastest Ramp Speed

10 ........................................Slowest Ramp Speed

11.........................................Immediate. PWM Popguard Disabled.

9.6 Mixer / Pre-Scale Configuration (Address 06h)

7

PreScale2

6

PreScale1

5

PreScale0

4

Reserved

3

RChMix1

2

RChMix0

1

LChMix1

0

LChMix0

9.6.1

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

Default = 000

Function:

Controls the pre-scale attenuation level. See “Pre-Scaler” on page 30 for more information.

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

DS726PP3

75

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