WM8772 datasheet(8/70 Pages) WOLFSON

8 / 70 page

WM8772

Production Data

PD Rev 4.1 October 2004

PIN DESCRIPTION – 32 LEAD TQFP

NAME

TYPE

DESCRIPTION

ADCLRC

Digital Input/Output

ADC left/right word clock

DACLRC

Digital Input/Output

DAC left/right word clock

DVDD

Supply

Digital positive supply

DGND

Supply

Digital negative supply

DIN1

Digital Input

DAC channel 1 data input

DIN2

Digital Input

DAC channel 2 data input

DIN3

Digital Input

DAC channel 3 data input

DOUT

Digital Output

ADC data output

ML/I2S

Digital Input

Software Mode: Serial interface Latch signal

Hardware Mode: Input Audio Data Format

MC/IWL

Digital Input

Software Mode: Serial control interface clock

Hardware Mode: Audio data input word length

MD/DM

Digital Input

Software Mode: Serial interface data

Hardware Mode: De-emphasis selection

MUTE

Digital Input/Output

DAC Zero Flag output or DAC Mute Input

REFADC

Analogue Output

ADC reference buffer decoupling pin; 10uF external decoupling

ADCVREFN

Supply

ADC negative supply

DACVREFN

Supply

DAC negative supply

DACVREFP

Supply

DAC positive reference supply

VMID

Analogue Output

Midrail divider decoupling pin; 10uF external decoupling

AINR

Analogue Input

ADC right input

AINL

Analogue Input

ADC left input

VOUT1L

Analogue Output

DAC channel 1 left output

VOUT1R

Analogue Output

DAC channel 1 right output

VOUT2L

Analogue Output

DAC channel 2 left output

VOUT2R

Analogue Output

DAC channel 2 right output

VOUT3L

Analogue Output

DAC channel 3 left output

VOUT3R

Analogue Output

DAC channel 3 right output

AGND

Supply

Analogue negative supply and substrate connection

AVDD

Supply

Analogue positive supply

MODE

Digital Input

Control format selection

0 = Software control

1 = Hardware control

ADCMCLK

Digital Input

Master ADC clock; 256, 384, 512 or 768fs (fs = word clock frequency)

DACMCLK

Digital Input

Master DAC clock; 256, 384, 512 or 768fs (fs = word clock frequency)

ADCBCLK

Digital Input/Output

ADC audio interface bit clock

DACBCLK

Digital Input/Output

DAC audio interface bit clock

Note: Digital input pins have Schmitt trigger input buffers.

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