wm8982gefl-v Wolfson Microelectronics plc, wm8982gefl-v Datasheet - Page 55

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

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Table 43 MONOOUT Mixer Registers
The MONOOUT output stage has a selectable gain boost of 1.5x (3.52dB). When this boost is
enabled the output DC level is also level shifted (from AVDD/2 to 1.5xAVDD/2) to prevent the signal
from clipping. A dedicated amplifier BUFDCOP, as shown in Figure 30, is used to perform the DC
level shift operation.
operating mode. It should also be noted that if SPKVDD is not equal to or greater than 1.5xAVDD
this boost mode may result in signals clipping. Table 40 summarises the effect of the MONOBOOST
control bit.
Figure 31 MONOOUT
R56
MONOOUT
mixer control
REGISTER
ADDRESS
6
2
1
0
BIT
This buffer must be enabled using the BUFDCOPEN register bit for this
MONOOUT
MUTE
BYPL2MONO
OUT
MIX1_2MONO
OUT
DAC2MONO
OUT
LABEL
0
0
0
1
DEFAULT
0 = Output stage outputs MONOOUT
mixer
1 = Output stage muted – drives out
VMID. Can be used as VMID buffer in
this mode.
ADC input to MONOOUT
0 = disabled
1= enabled
Mixer 1 to MONOOUT
0 = disabled
1= enabled
DAC output to MONOOUT
0 = disabled
1= enabled
PP, Rev 3.2, September 2008
DESCRIPTION
WM8982
55