WM8993 datasheet(176/229 Pages) WOLFSON

176 / 229 page

WM8993

Production Data

PD, November 2010, Rev 4.0

176

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

10 = Right ADC

11 = Reserved

1:0

ADC_TO_DAC

R [1:0]

Right DAC Digital Sidetone Source

00 = No sidetone

01 = Left ADC

10 = Right ADC

11 = Reserved

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R14 (0Eh)

ADC CTRL

ADC_OSR128

ADC Oversample Rate Select

0 = disabled

1 = enabled

For 48kHz sample rate, the ADC oversample rate is

128fs when ADC_OSR128 is selected. Setting this bit

to 0 selects 64fs mode.

Default is 128fs.

ADC_HPF

ADC Digital High Pass Filter Enable

0 = disabled

1 = enabled

6:5

ADC_HPF_CU

T [1:0]

ADC Digital High Pass Filter Cut-Off Frequency (fc)

00 = Hi-fi mode (fc=4Hz at fs=48kHz)

01 = Voice mode 1 (fc=127Hz at fs=16kHz)

10 = Voice mode 2 (fc=130Hz at fs=8kHz)

11 = Voice mode 3 (fc=267Hz at fs=8kHz)

(Note: fc scales with sample rate.)

ADCL_DATINV

Left ADC Invert

0 = Left ADC output not inverted

1 = Left ADC output inverted

ADCR_DATIN

Right ADC Invert

0 = Right ADC output not inverted

1 = Right ADC output inverted

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R15 (0Fh)

Left ADC

Digital

Volume

ADC_VU

ADC Volume Update

Writing a 1 to this bit will cause left and right ADC

volume to be updated simultaneously

7:0

ADCL_VOL

[7:0]

1100_0000 Left ADC Digital Volume

00h = MUTE

01h = -71.625dB

… (0.375dB steps)

EFh = +17.625dB

WM8993 Datasheet(PDF) 176 Page - Wolfson Microelectronics plc

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