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WM8974GEFL/V Datasheet(PDF) 25 Page - Wolfson Microelectronics plc

Part # WM8974GEFL/V
Description  Mono CODEC with Speaker Driver
PDF  87 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8974GEFL/V Datasheet(HTML) 25 Page - Wolfson Microelectronics plc

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Production Data
WM8974
w
PD Rev 4.2 March 2007
25
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.
NORMAL MODE
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.
Figure 11 ALC Normal Mode Operation



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