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WM8983GEFL/V Datasheet(PDF) 95 Page - Wolfson Microelectronics plc

Part # WM8983GEFL/V
Description  Mobile Multimedia CODEC with 1W Speaker Driver
PDF  124 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8983GEFL/V Datasheet(HTML) 95 Page - Wolfson Microelectronics plc

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Production Data
WM8983
w
PD, Rev 4.3, May 2010
95
BIASEN
The analogue amplifiers will not operate unless BIASEN is enabled.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R1
Power
management 1
3
BIASEN
0
Analogue amplifier bias control
0 = disabled
1 = enabled
Table 68 Analogue Bias Control
BIAS CONTROL
Control of the analog bias values is possible using register 61 and 62
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R61
Bias control
8
BIASCUT
0
Global bias control
0 = normal
1 = 0.5x
7:0
000 0000
Reserved
Table 69 Analogue Bias Control
Note that these bits must be used with care and may cause degradation in analog performance. For
example, if both BIASCUT and HALFDACI are used at same time, the playback THD will be poor.



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