wm8961 Wolfson Microelectronics plc, wm8961 Datasheet - Page 85

• Manufacturer Part Number: wm8961
• Description: Ultra-low Power Stereo Codec With 1w Stereo Class D Speaker Drivers And Ground Referenced Headphone Drivers
• Manufacturer: Wolfson Microelectronics plc

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WM8961
ADC and DAC
ADC and DAC
Register 05h ADC and DAC Control 1
Register 06h ADC and DAC Control 2
REGISTER
REGISTER
ADDRESS
ADDRESS
Control 1
Control 2
R5 (05h)
R6 (06h)
8:7
6:5
BIT
BIT
6:5
2:1
3
2
1
0
3
0
ADC_HPF_CUT[1:0]
DEEMPH[1:0]
ADCPOL[1:0]
DAC_OSR128
DACPOL[1:0]
ADCHPD
DACSLOPE
DACMU
LABEL
DACSMM
DACMR
LABEL
DEFAULT
00
00
DEFAULT
1
0
00
00
0
0
0
0
ADC Data invert
00 : Both Channels normal polarity
01 : Left Channel Inverted
10 : Right Channel Inverted
11 : Both Channels Inverted
Digital DAC mute
DAC De-emphasis Filter Control
00: no de-emphasis
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
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
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.
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
DAC 128 Over Sampling Rate
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
DESCRIPTION
DESCRIPTION
PP, August 2009, Rev 3.1
Pre-Production
85