CS42L56 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS42L56

Ultralow Power, Stereo Codec with Class H Headphone Amp

Cirrus Logic 

CS42L56

Notes:

1. The step size may deviate from 1.0 dB. Refer to Figure 39 on page 89 and Figure 40 on page 89.

2. See section “Analog Output Attenuation Characteristics” on page 26 for actual Mute Attenuation.

6.37 Limiter Min/Max Thresholds (Address 2Ch)

7

LMAX2

6

LMAX1

5

LMAX0

4

CUSH2

3

CUSH1

2

CUSH0

1

Reserved

0

Reserved

6.37.1 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 86).

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 46

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

trigger an attack.

6.37.2 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 86) 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 46

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

84

DS851F2

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