User Manual

80 DS851F2

CS42L56

6.31.2 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 80) until levels lie between the ALCMAX and AL-

CMIN thresholds.

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

6.32 Noise Gate Control (Address 25h)

6.32.1 Noise Gate All Channels

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

6.32.2 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 35

76543210

NGALL NG 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

ONLY that channel.

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

take effect.

NG Noise Gate Status

0 Disabled

1 Enabled