WM8961 datasheet(85/116 Pages) WOLFSON

85 / 116 page

WM8961

Pre-Production

PP, August 2009, Rev 3.1

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R5 (05h)

ADC and DAC

Control 1

6:5

ADCPOL[1:0]

ADC Data invert

00 : Both Channels normal polarity

01 : Left Channel Inverted

10 : Right Channel Inverted

11 : Both Channels Inverted

DACMU

Digital DAC mute

2:1

DEEMPH[1:0]

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

ADCHPD

Disables high pass filter

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R6 (06h)

ADC and DAC

Control 2

8:7

ADC_HPF_CUT[1:0]

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)

6:5

DACPOL[1:0]

DAC Data invert

00 : Both Channels normal polarity

01 : Left Channel Inverted

10 : Right Channel Inverted

11 : Both Channels Inverted

DACSMM

0=No soft mute

1=slow volume ramp when DAC muted/un-muted.

DACMR

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)

DACSLOPE

Sloping stop band enable

DAC_OSR128

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

WM8961 Datasheet(PDF) 85 Page - Wolfson Microelectronics plc

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