WM8994ECSSLASHR datasheet(84/363 Pages) CIRRUS

84 / 363 page

WM8994

Rev 4.6

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R1346 (0542h)

AIF2 DRC (3)

15:12

AIF2DRC_NG_

MINGAIN [3:0]

0000

AIF2 DRC Minimum gain to

attenuate audio signals when the

noise gate is active.

0000 = -36dB

0001 = -30dB

0010 = -24dB

0011 = -18dB

0100 = -12dB

0101 = -6dB

0110 = 0dB

0111 = 6dB

1000 = 12dB

1001 = 18dB

1010 = 24dB

1011 = 30dB

1100 = 36dB

1101 to 1111 = Reserved

11:10

AIF2DRC_NG_E

XP [1:0]

AIF2 DRC Noise Gate slope

00 = 1 (no expansion)

01 = 2

10 = 4

11 = 8

9:8

AIF2DRC_QR_T

HR [1:0]

AIF2 DRC Quick-release threshold

(crest factor in dB)

00 = 12dB

01 = 18dB

10 = 24dB

11 = 30dB

7:6

AIF2DRC_QR_D

CY [1:0]

AIF2 DRC Quick-release decay rate

(seconds/6dB)

00 = 0.725ms

01 = 1.45ms

10 = 5.8ms

11 = Reserved

5:3

AIF2DRC_HI_C

OMP [2:0]

000

AIF2 DRC Compressor slope

(upper region)

000 = 1 (no compression)

001 = 1/2

010 = 1/4

011 = 1/8

100 = 1/16

101 = 0

110 = Reserved

111 = Reserved

2:0

AIF2DRC_LO_C

OMP [2:0]

000

AIF2 DRC Compressor slope (lower

region)

000 = 1 (no compression)

001 = 1/2

010 = 1/4

011 = 1/8

100 = 0

101 = Reserved

11X = Reserved

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