CS4525 datasheet(80/91 Pages) CIRRUS

80 / 91 page

DS726A1

CS4525

limiter will limit the maximum signal amplitude to prevent clipping on all channels in response to any single

channel indicating clipping. See “Peak Signal Limiter” on page 37 for more information.

9.15.4

Peak Detect and Limiter Enable (EnLimiter)

Default = 0

Function:

Limits the maximum signal amplitude to prevent clipping when this function is enabled. Peak signal limit-

ing is performed by digital attenuation.

9.16

Limiter Configuration 2 (Address 5Dh)

9.16.1

Limiter Release Rate (RRate[5:0])

Default = 000000

Function:

Sets the rate at which the limiter releases the digital attenuation from levels below the minimum setting in

the limiter threshold register.

The limiter release rate is a function of the sampling frequency, Fs, and the soft and zero cross setting.

9.17

Limiter Configuration 3 (Address 5Eh)

9.17.1

Limiter Attack Rate (ARate[5:0])

Default = 000000

Function:

Sets the rate at which the limiter attenuates the analog output from levels above the maximum setting in

the limiter threshold register. The limiter attack rate is a function of the sampling frequency, Fs, and the

soft and zero cross setting.

LimitAll Setting

Limit All Channels Configuration

0 .......................................... Only individual channels affected by any limiter event.

1 .......................................... All channels affected by any limiter event.

EnLimiter Setting

Peak Signal Limiter State

0 .......................................... Peak signal limiter disabled.

1 .......................................... Peak signal limiter enabled.

543

Reserved

RRate5

RRate4

RRate3

RRate2

RRate1

RRate0

RRate[5:0] Setting

Limiter Release Rate

00000 .................................. Fastest release.

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

11111.................................... Slowest release.

543

Reserved

ARate5

ARate4

ARate3

ARate2

ARate1

ARate0

ARate[5:0] Setting

Limiter Attack Rate

00000 .................................. Fastest attack.

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

11111.................................... Slowest attack.

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