WM8978_06 Wolfson Microelectronics Ltd., WM8978_06 Datasheet - Page 33

• Manufacturer Part Number: WM8978_06
• Description: Stereo Codec With Speaker Driver
• Manufacturer: Wolfson Microelectronics Ltd.

Pre-Production
w
Table 10 Input BOOST Stage Control
Table 11 Input BOOST Enable Control
The BOOST stage is enabled under control of the BOOSTEN register bit.
R47
Left channel
Input BOOST
control
R48
Right channel
Input BOOST
control
R2
Power
management
2
REGISTER
REGISTER
ADDRESS
ADDRESS
2:0
6:4
2:0
6:4
4
5
BIT
BIT
AUXL2BOOSTVOL
L2_2BOOSTVOL
AUXR2BOOSTVOL
R2_2BOOSTVOL
BOOSTENL
BOOSTENR
LABEL
LABEL
0
0
DEFAULT
000
000
000
000
DEFAULT
Left channel Input BOOST enable
0 = Boost stage OFF
1 = Boost stage ON
Right channel Input BOOST enable
0 = Boost stage OFF
1 = Boost stage ON
Controls the auxilliary amplifer to
the left channel input boost stage:
000=Path disabled (disconnected)
001=-12dB gain through boost
stage
010=-9dB gain through boost
stage
…
111=+6dB gain through boost
stage
channel input boost stage:
000=Path disabled (disconnected)
001=-12dB gain through boost
stage
010=-9dB gain through boost
stage
…
111=+6dB gain through boost
stage
Controls the auxilliary amplifer to
the right channel input boost
stage:
000=Path disabled (disconnected)
001=-12dB gain through boost
stage
010=-9dB gain through boost
stage
…
111=+6dB gain through boost
stage
Controls the R2 pin to the right
channel input boost stage:
000=Path disabled (disconnected)
001=-12dB gain through boost
stage
010=-9dB gain through boost
stage
…
111=+6dB gain through boost
stage
Controls the L2 pin to the left
DESCRIPTION
DESCRIPTION
PP Rev 3.0 May 2006
WM8978
33