CS4525 datasheet(87/98 Pages) CIRRUS

87 / 98 page

DS726PP1

CS4525

9.17 Limiter Configuration 2 (Address 5Dh)

9.17.1 Limiter Release Rate (RRate[5:0])

Default = 111111

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.

9.18 Limiter Configuration 3 (Address 5Eh)

9.18.1 Enable Thermal Limiter (EnThLim)

Default = 0

Function:

When set, enables the thermal limiter function. The thermal limiter function adds an additional -3dB of at-

tenuation to the min and max settings of the peak signal limiter the first time a thermal warning is detected

after the thermal limiter function has been enabled. For more details, see the “Thermal Limiter” section on

page 39.

9.18.2 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.

432

Reserved

RRate5

RRate4

RRate3

RRate2

RRate1

RRate0

RRate[5:0] Setting

Limiter Release Rate

000000 ................................Fastest release.

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

111111..................................Slowest release.

432

EnThLim

Reserved

ARate5

ARate4

ARate3

ARate2

ARate1

ARate0

EnThLim Setting

Thermal Limiter State

0 ..........................................Thermal limiter disabled.

1 ..........................................Thermal limiter enabled.

ARate[5:0] Setting

Limiter Attack Rate

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

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

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

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