WM8510GEDSSLASHRV datasheet(24/81 Pages) WOLFSON

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WM8510

Production Data

PD Rev 4.1 December 2006

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

ALCMODE

Determines the ALC mode of operation:

0 = ALC mode (Normal Operation)

1 = Limiter mode.

Decay (gain ramp-up) time

(ALCMODE ==0)

Per

step

Per

6dB

90% of

range

0000

410us

3.38ms

23.6ms

0001

820us

6.56ms

47.2ms

0010

1.64ms

13.1ms

94.5ms

… (time doubles with every step)

0011

(26ms/6dB)

1010

higher

420ms

3.36s

24.2s

Decay (gain ramp-up) time

(ALCMODE ==1)

Per

step

Per

6dB

90% of

range

0000

90.8us

726us

5.23ms

0001

182us

1.45ms

10.5ms

0010

363us

2.91ms

20.9ms

… (time doubles with every step)

7:4

ALCDCY

[3:0]

0011

(5.8ms/6dB)

1010

93ms

744ms

5.36s

ALC attack (gain ramp-down) time

(ALCMODE == 0)

Per

step

Per

6dB

90% of

range

0000

104us

832us

6ms

0001

208us

1.66ms

12ms

0010

416us

3.33ms

24ms

… (time doubles with every step)

0010

(3.3ms/6dB)

1010

higher

106ms

852ms

6.13s

ALC attack (gain ramp-down) time

(ALCMODE == 1)

Per

step

Per

6dB

90% of

range

0000

22.7us

182.4us

1.31ms

0001

45.4us

363us

2.62ms

0010

90.8us

726us

5.23ms

… (time doubles with every step)

R34 (22h)

ALC Control

3:0

ALCATK

[3:0]

0010

(726us/6dB)

1010

higher

23.2ms

186ms

1.34s

Table 14 ALC Control Registers

When the ALC is disabled, the input PGA remains at the last controlled value of the ALC. An input

gain update must be made by writing to the INPPGAVOLL/R register bits.

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