CS42L52 datasheet(69/82 Pages) CIRRUS

69 / 82 page

DS680A1

CS42L52

6.34.2 ALC Minimum Threshold

Sets the minimum level at which to disengage the ALC’s attenuation or amplify the input signal at the re-

lease rate (ALCRRATE - “ALC Release Rate” on page 68) until levels lie between the ALCMAX and AL-

CMIN thresholds.

Note:

This setting is usually set slightly below the ALCMAX threshold.

6.35 Noise Gate Control (Address 2Dh)

6.35.1 Noise Gate All Channels

Sets which channels are attenuated when clipping on any single channel occurs.

6.35.2 Noise Gate Enable

Configures the noise gate.

ALCMIN[2:0]

Threshold Setting

000

0 dB

001

-3 dB

010

-6 dB

011

-9 dB

100

-12 dB

101

-18 dB

110

-24 dB

111

-30 dB

Application:

“Automatic Level Control (ALC)” on page 27

432

NGALL

NG_BOOST

THRESH2

THRESH1

THRESH0

NGDELAY1

NGDELAY0

NGALL

Noise Gate triggered by:

Individual channel; Any channel that falls below the threshold setting triggers the noise gate attenuation for

both channels.

Both channels A & B; Both channels must fall below the threshold setting for the noise gate attenuation to

take effect.

Application:

“Noise Gate” on page 28

Noise Gate Status

Disabled

Enabled

Application:

“Noise Gate” on page 28

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