WM8976 Wolfson Microelectronics Ltd., WM8976 Datasheet - Page 31

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WM8976

Manufacturer Part Number
WM8976
Description
The WM8976 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
Manufacturer
Wolfson Microelectronics Ltd.
Datasheet

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Table 17 ALC Control Registers
NORMAL MODE
Figure 11 ALC Normal Mode Operation
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.
In normal mode, the ALC will attempt to maintain a constant signal level by increasing or decreasing
the gain of the PGA. The following diagram shows an example of this.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
0000
0001
0010
… (time doubles with every step)
1010
or
higher
22.7us
45.4us
90.8us
23.2ms
DESCRIPTION
PP Rev 3.0 April 2006
182.4us
363us
726us
186ms
WM8976
1.31ms
2.62ms
5.23ms
1.34s
31

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