WM8993 datasheet(211/229 Pages) WOLFSON

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Production Data

WM8993

PD, November 2010, Rev 4.0

211

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

[1:0]

signals

00 = 0dB (default)

01 = -6dB

10 = -12dB

11 = -18dB

1:0

DRC_MAXGAI

N [1:0]

Maximum gain the DRC can use to boost audio signals

00 = 12dB

01 = 18dB (default)

10 = 24dB

11 = 36dB

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R124 (7Ch)

DRC Control

15:12

DRC_ATTACK

_RATE [3:0]

0000

Gain attack rate (seconds/6dB)

0000 = Reserved

0001 = 181us

0010 = 363us

0011 = 726us

0100 = 1.45ms

0101 = 2.9ms

0110 = 5.8ms

0111 = 11.6ms

1000 = 23.2ms

1001 = 46.4ms

1010 = 92.8ms

1011 = 185.6ms

1100-1111 = Reserved

11:8

DRC_DECAY_

RATE [3:0]

0000

Gain decay rate (seconds/6dB)

0000 = 186ms

0001 = 372ms

0010 = 743ms

0011 = 1.49s

0100 = 2.97s

0101 = 5.94s

0110 = 11.89s

0111 = 23.78s

1000 = 47.56s

1001-1111 = Reserved

7:2

DRC_THRESH

_COMP [5:0]

00_0000

Compressor threshold T (dB)

000000 = 0dB

000001 = -0.75dB

000010 = -1.5dB

… (-0.75dB steps)

111100 = -45dB

111101 = Reserved

11111X = Reserved

WM8993 Datasheet(PDF) 211 Page - Wolfson Microelectronics plc

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