WM8961
Pre-Production
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
ADC Data invert
00 : Both Channels normal polarity
01 : Left Channel Inverted
R5 (05h)
ADC and DAC
Control 1
6:5
ADCPOL[1:0]
00
10 : Right Channel Inverted
11 : Both Channels Inverted
Digital DAC mute
3
DACMU
1
DAC De-emphasis Filter Control
00: no de-emphasis
2:1
DEEMPH[1:0]
00
01: De-emphasis for 32kHz sample rate
10: De-emphasis for 44.1kHz sample rate
11: De-emphasis for 48kHz sample rate
Disables high pass filter
0
ADCHPD
0
Register 05h ADC and DAC Control 1
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R6 (06h)
ADC and DAC
Control 2
8:7
ADC_HPF_CUT[1:0]
00
ADC High Pass Filter Cutoff
00: Hi-fi mode (fc=4Hz at fs=48kHz)
01: Voice mode 1 (fc=127 at fs=16kHz)
10: Voice mode 2 (fc=130 at fs=8kHz)
11: Voice mode 3 (fc=267Hz at fs=8kHz)
(Note: fc scales with sample rate. See Table 14 for cut-off
frequencies at all supported sample rates)
DAC Data invert
6:5
DACPOL[1:0]
00
00 : Both Channels normal polarity
01 : Left Channel Inverted
10 : Right Channel Inverted
11 : Both Channels Inverted
0=No soft mute
1=slow volume ramp when DAC muted/un-muted.
3
2
DACSMM
DACMR
0
0
Select fast or slow volume ramp up and down
0: Fast Ramp Rate (24kHz at fs=48k, providing maximum delay of
10.7ms)
1: Slow ramp rate (1.5kHz at fs=48kHz, providing maximum delay of
171ms)
Sloping stop band enable
1
0
DACSLOPE
0
0
DAC 128 Over Sampling Rate
DAC_OSR128
0: 64x DAC oversampling
1: If MANUAL_MODE=0, automatically configure DACDIV[2:0] for
128OSR mode. This will give a SNR improvement at the expense of
power
Register 06h ADC and DAC Control 2
PP, August 2009, Rev 3.1
w
85
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
