WM8946ECSSLASHR datasheet(42/175 Pages) WOLFSON

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WM8946

Production Data

PD, July 2012, Rev 4.3

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

7:2

DRC_KNEE_IP

000000

Input signal level at the Compressor

‘Knee1’.

000000 = 0dB

000001 = -0.75dB

000010 = -1.5dB

… (-0.75dB steps)

111100 = -45dB

111101 = Reserved

11111X = Reserved

R33 (21h)

DRC Control 5

DRC_KNEE2_OP

_ENA

DRC_KNEE2_OP Enable

0 = Disabled

1 = Enabled

12:8

DRC_KNEE2_OP

00000

Output signal at the Noise Gate

threshold ‘Knee2’.

00000 = -30dB

00001 = -31.5dB

00010 = -33dB

… (-1.5dB steps)

11110 = -75dB

11111 = -76.5dB

Only applicable when

DRC_KNEE2_OP_ENA = 1.

7:3

DRC_KNEE_OP

00000

Output signal at the Compressor

‘Knee1’.

00000 = 0dB

00001 = -0.75dB

00010 = -1.5dB

… (-0.75dB steps)

11110 = -22.5dB

11111 = Reserved

2:0

DRC_HI_COMP

011

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

R35 (23h)

DRC Control 7

9:8

DRC_NG_EXP

Noise Gate slope

00 = 1 (no expansion)

01 = 2

10 = 4

11 = 8

7:5

DRC_LO_COMP

000

Compressor slope (lower region)

000 = 1 (no compression)

001 = 1/2

010 = 1/4

011 = 1/8

100 = 0

101 = Reserved

11X = Reserved

Table 17 DRC Control Registers

WM8946ECS/R Datasheet(PDF) 42 Page - Wolfson Microelectronics plc

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