CS42L52(2006) View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS42L52
(Rev.:2006)

Low Power, Stereo CODEC w/Headphone & Speaker Amps

Cirrus Logic 

6.29 Limiter Control 1, Min/Max Thresholds (Address 27h)

7

LMAX2

6

LMAX1

5

LMAX0

4

CUSH2

3

CUSH1

2

CUSH0

CS42L52

1

LIMSRDIS

0

LIMZCDIS

6.29.1 Limiter Maximum Threshold

Sets the maximum level, below full scale, at which to limit and attenuate the output signal at the attack

rate (LIMARATE - “Limiter Release Rate” on page 66).

LMAX[2:0]

000

001

010

011

100

101

110

111

Application:

Threshold Setting

0 dB

-3 dB

-6 dB

-9 dB

-12 dB

-18 dB

-24 dB

-30 dB

“Limiter” on page 31

Note: Bass, Treble and digital gain settings that boost the signal beyond the maximum threshold may

trigger an attack.

6.29.2 Limiter Cushion Threshold

Sets the minimum level at which to disengage the Limiter’s attenuation at the release rate (LIMRRATE -

“Limiter Release Rate” on page 66) until levels lie between the LMAX and CUSH thresholds.

CUSH[2:0]

000

001

010

011

100

101

110

111

Application:

Threshold Setting

0 dB

-3 dB

-6 dB

-9 dB

-12 dB

-18 dB

-24 dB

-30 dB

“Limiter” on page 31

Note: This setting is usually set slightly below the LMAX threshold.

6.29.3 Limiter Soft Ramp Disable

Configures an override of the digital soft ramp setting.

LIMSRDIS

0

1

Application:

Limiter Soft Ramp Disable

OFF; Limiter Attack Rate is dictated by the DIGSFT (“Digital Soft Ramp” on page 53) setting

ON; Limiter volume changes take effect in one step, regardless of the DIGSFT setting.

“Limiter” on page 31

Note: This bit is ignored when the DIGZC (“Digital Zero Cross” on page 53) is enabled.

DS680A1

65

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