WM1811A datasheet(8/328 Pages) WOLFSON

8 / 328 page

WM1811A

Production Data

PD, November 2013, Rev 4.1

PIN DESCRIPTION

A description of each pin on the WM1811A is provided below.

Note that a table detailing the associated power domain for every input and output pin is provided on the following page.

Note that, where multiple pins share a common name, these pins should be tied together on the PCB.

PIN NO

NAME

TYPE

DESCRIPTION

ADCDAT1

Digital Output

Audio interface 1 ADC digital audio data

ADCDAT2

Digital Output

Audio interface 2 ADC digital audio data

ADCLRCLK1/

GPIO1

Digital Input / Output

Audio interface 1 ADC left / right clock /

General Purpose pin GPIO 1

ADDR

Digital Input

2-wire (I2C) address select

AGND

Supply

Analogue ground (Return path for AVDD1, AVDD2 and LDO1VDD)

E9, G9

AVDD1

Supply / Analogue

Output

Analogue core supply / LDO1 Output

AVDD2

Supply

Bandgap and Jack Detect reference, analogue Class D and FLL supply

BCLK1

Digital Input / Output

Audio interface 1 bit clock

BCLK2

Digital Input / Output

Audio interface 2 bit clock

CPCA

Analogue Output

Charge pump fly-back capacitor pin

CPCB

Analogue Output

Charge pump fly-back capacitor pin

CPGND

Supply

Charge pump ground (Return path for CPVDD)

CPVDD

Supply

Charge pump supply

CPVOUTN

Analogue Output

Charge pump negative supply decoupling pin (HPOUT1L, HPOUT1R)

CPVOUTP

Analogue Output

Charge pump positive supply decoupling pin (HPOUT1L, HPOUT1R)

DACDAT1

Digital Input

Audio interface 1 DAC digital audio data

DACDAT2

Digital Input

Audio interface 2 DAC digital audio data

DBVDD1

Supply

Digital buffer (I/O) supply (core functions and Audio Interface 1)

DBVDD2

Supply

Digital buffer (I/O) supply (for Audio Interface 2)

DBVDD3

Supply

Digital buffer (I/O) supply (for Audio Interface 3)

DCVDD

Supply / Analogue

Output

Digital core supply / LDO2 output

DGND

Supply

Digital ground (Return path for DCVDD, DBVDD1, DBVDD2, DBVDD3)

DMICCLK

Digital Output

Digital MIC clock output

GPIO10/

LRCLK3

Digital Input / Output

General Purpose pin GPIO 10 /

Audio interface 3 left / right clock

GPIO11/

BCLK3

Digital Input / Output

General Purpose pin GPIO 11 /

Audio interface 3 bit clock

GPIO8/

DACDAT3

Digital Input / Output

General Purpose pin GPIO 8 /

Audio interface 3 DAC digital audio data

GPIO9/

ADCDAT3

Digital Input / Output

General Purpose pin GPIO 9 /

Audio interface 3 ADC digital audio data

HP2GND

Supply

Analogue ground

HPOUT1FB

Analogue Input

HPOUT1L and HPOUT1R ground loop noise rejection feedback

HPOUT1L

Analogue Output

Left headphone output

HPOUT1R

Analogue Output

Right headphone output

HPOUT2N

Analogue Output

Earpiece speaker inverted output

HPOUT2P

Analogue Output

Earpiece speaker non-inverted output

IN1LN

Analogue Input

Left channel single-ended MIC input /

Left channel negative differential MIC input

IN1LP

Analogue Input

Left channel line input /

Left channel positive differential MIC input

IN1RN

Analogue Input

Right channel single-ended MIC input /

Right channel negative differential MIC input

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