WM8608 datasheet(39/54 Pages) WOLFSON

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WM8608

PP Rev 1.5 March 2004

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R22 (16h)

Front,

Surround,

Front Centre

and

Rear Centre

Channel

Dynamic

Peak

Compressor

2:0

ATK[2:0]

010

Front, Surround, Front Centre and

Rear Centre Channel Attack Rate

000 = 170µs

001 = 330µs

010 = 670µs

011 = 1.33ms

100 = 2.67ms

101 = 5.33ms

110 = 10.7ms

111 = 20.1ms

5:3

DCY[2:0]

011

Front, Surround, Front Centre and

Rear Centre Channel Decay Rate

000 = 340ms

001 = 680ms

010 = 1.36s

011 = 2.73s

100 = 5,46s

101, 110, 111 = 10.9s

7:6

THRESH[1:0]

Front, Surround, Front Centre and

Rear Centre Channel Compressor

Thresholds

00 = -12dB

01 = -9dB

10 = -6dB

11 = -3dB

FDEP

Frequency-dependent decay

0 = disable

1 = enable

Table 37 Front, Surround, Front Centre and Rear Centre Channel Dynamic Peak

Compressor (2)

Note: The Dynamic Peak Compressors can be enabled independently for each channel pair (e.g.

FL/FR, SL/SR). All channels use the same characteristics (e.g. Attack Rate).

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R23 (17h)

Sub Channel

Dynamic

Peak

Compressor

PLENSUB

Sub Channel Compressor Enable

0 = disable

1 = enable

Table 38 Subwoofer Channel Dynamic Peak Compressor (1)

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