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WM8985GEFL/R Datasheet(PDF) 45 Page - Wolfson Microelectronics plc

Part # WM8985GEFL/R
Description  Multimedia CODEC with Class D Headphone and Line Out
PDF  121 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8985GEFL/R Datasheet(HTML) 45 Page - Wolfson Microelectronics plc

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Production Data
WM8985
w
PD, Rev 4.6, July 2009
45
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
… (time doubles with every step)
1010
23.2ms
186ms
1.348s
Table 20 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.
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 21 ALC Normal Mode Operation



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