WM8971L Wolfson Microelectronics Ltd., WM8971L Datasheet - Page 23

• Manufacturer Part Number: WM8971L
• Description: Stereo Codec for Portable Audio Applications
• Manufacturer: Wolfson Microelectronics Ltd.

Production Data
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Table 8 ADC Signal Path Control
Table 9 ADC High Pass Filter Enable Modes
R5 (05h)
ADC and DAC
Control
R27 (1Bh)
REGISTER
ADDRESS
HPFLREN
0
0
1
1
6:5
4
0
5
BIT
ADCPOL
[1:0]
HPOR
ADCHPD
HPFLREN
ADCHPD
LABEL
0
1
0
1
00
0
0
0
DEFAULT
High-pass filter enabled on left and right
channels
High-pass filter disabled on left and right
channels
High-pass filter enabled on left channel,
disabled on right channel
High-pass filter disabled on left channel,
enabled on right channel
00 = Polarity not inverted
01 = L polarity invert
10 = R polarity invert
11 = L and R polarity invert
Store dc offset when high-pass
Filter disabled
1 = store offset
0 = clear offset
ADC high-pass filter enable
(Digital)
HPFLREN = 0
1 = Disable High-pass filter on left
and right channels
0 = Enable High-pass filter on left
and right channels
HPFLREN = 1
0 = High-pass enabled on left,
disabled on right
1 = High-pass enabled on right,
disabled on left
ADC high-pass filter left or right
enable
0 = High-pass filter enable/disable
on left and right channels
controlled by ADCHPD
1 = High-pass filter enabled on left
or right channel, as selected by
ADCHPD
HIGH PASS MODE
DESCRIPTION
PD Rev 4.1 August 2005
WM8971L
23