wm8982gefl-v Wolfson Microelectronics plc, wm8982gefl-v Datasheet - Page 53

• Manufacturer Part Number: wm8982gefl-v
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

Pre-Production
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Table 39 Speaker Boost Stage Control
Table 40 Output Boost Stage Details
Table 41 AUX2 – SPKOUTN BEEP Mixer Function
R49
Output control
R1
Power
management
1
R43
Beep control
SPKRBOOST
REGISTER
REGISTER
ADDRESS
ADDRESS
0
1
2
8
5
4
3:1
0
BIT
STAGE GAIN
BIT
1.5x (3.52dB)
OUTPUT
1x (0dB)
SPKRBOOST
BUFDCOPEN
MUTEPGA2INV
INVOUTN
BEEPVOL
BEEPEN
LABEL
LABEL
OUTPUT DC
1.5xAVDD/2
AVDD/2
LEVEL
DEFAULT
DEFAULT
000
0
0
0
0
0
CONFIGURATION
OUTPUT STAGE
Non-inverting
Inverting
0 = speaker gain = -1;
1 = speaker gain = +1.5;
Dedicated buffer for DC level shifting
output stages when in 1.5x gain
boost configuration.
0=Buffer disabled
1=Buffer enabled (required for 1.5x
gain boost)
Mute input to INVOUTN mixer
AUX2 input to SPKOUTN inverter
gain
000 = -15dB
...
111 = +6dB
1 = enable AUX2 beep input
Invert SPKOUTN output
0 = mute AUX2 beep input
DC = AVDD / 2
DC = 1.5 x AVDD / 2
PP, Rev 3.2, September 2008
DESCRIPTION
DESCRIPTION
WM8982
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