wm8775 Wolfson Microelectronics plc, wm8775 Datasheet - Page 25

• Manufacturer Part Number: wm8775
• Description: 24-bit, 96khz Adc With 4 Channel I/p Multiplexer
• Manufacturer: Wolfson Microelectronics plc

ADC Input Mux
Production Data
0010101
w
Attenuation
Attenuation
REGISTER
ADDRESS
R21(15h)
ADC Mute
R14(0Eh)
R15(0Fh)
R21(15h)
0001110
0001111
0010101
ADCR
ADCL
BIT
7:0
7:0
8
8
8
7
6
RAG[7:0]
MUTERA
LAG[7:0]
LRBOTH
MUTELA
LABEL
ZCRA
ZCLA
ADC HIGHPASS FILTER DISABLE
The ADC digital filters contain a digital high pass filter. This defaults to enabled and can be disabled
using software control bit ADCHPD.
REGISTER ADDRESS
ADC Control
R11(0Bh)
0001011
11001111
11001111
DEFAULT
(0dB)
(0dB)
0
0
0
0
0
Attenuation data for Left channel ADC gain in 0.5dB steps. See
Table 11.
Left channel ADC zero cross enable:
Attenuation data for right channel ADC gain in 0.5dB steps. See
Table 11.
Right channel ADC zero cross enable:
Right channel input PGA controlled by left channel register
Mute for left channel ADC
Mute for right channel ADC
BIT
8
ADCHPD
LABEL
0: Zero cross disabled
1: Zero cross enabled
0: Zero cross disabled
1: Zero cross enabled
0 : Right channel uses RAG.
1 : Right channel uses LAG.
0: Normal Operation
0: Normal operation
1: Mute ADC left
1: Mute ADC right
DEFAULT
0
DESCRIPTION
ADC High pass filter disable:
0: High pass filter enabled
1: High pass filter disabled
DESCRIPTION
PD, Rev 4.4, October 2008
WM8775
25