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WM8991 Datasheet(PDF) 74 Page - Wolfson Microelectronics plc

Part # WM8991
Description  Mobile Multimedia CODEC with Dual-Mode Class AB/D Speaker Driver
PDF  174 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8991 Datasheet(HTML) 74 Page - Wolfson Microelectronics plc

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WM8991
Pre-Production
w
PP, May 2008, Rev 3.1
74
The output mixers LOPMIX and LONMIX and their outputs LOP and LON are controlled as described
in Table 39. Care should be taken to avoid clipping when enabling more than one path to LOP or
LON. The LOATTN attenuation control can be used to prevent clipping when more than one full scale
signal is input to the LOP mixer.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
6
LONMUTE
1b
LON Line Output Mute
0 = Un-mute
1 = Mute
5
LOPMUTE
1b
LOP Line Output Mute
0 = Un-mute
1 = Mute
R30 (1Eh)
4
LOATTN
0b
LOP Attenuation
0 = 0dB
1 = -6dB
6
LLOPGALON
0b
LOPGA to LONMIX
0 = Mute
1 = Un-mute
5
LROPGALON
0b
ROPGA to LONMIX
0 = Mute
1 = Un-mute
4
LOPLON
0b
Inverted LOP Output to LONMIX
0 = Mute
1 = Un-mute
2
LR12LOP
0b
RIN12 PGA Output to LOPMIX
0 = Mute
1 = Un-mute
1
LL12LOP
0b
LIN12 PGA Output to LOPMIX
0 = Mute
1 = Un-mute
R52 (34h)
0
LLOPGALOP
0b
LOPGA to LOPMIX
0 = Mute
1 = Un-mute
Table 39 LOP and LON Volume Control



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