Pre-Production
WM8959
PIN DESCRIPTION
PIN NO
A2
NAME
MICBIAS
LIN1
TYPE
Analogue Output
Analogue Input
DESCRIPTION
Microphone bias
D3
Left channel single-ended MIC input /
Left channel negative differential MIC input
Left channel line input /
C5
C6
LIN2
Analogue Input
Left channel positive differential MIC input
Left channel line input /
LIN3 /
GPI7
Analogue Input /
Digital Input
Left channel negative differential MIC input /
Accessory or button detect input pin
Left channel line input /
B6
LIN4 /
RXN
Analogue Input
Left channel positive differential MIC input /
Mono differential negative input (Rx voice -)
Right channel single-ended MIC input /
Right channel negative differential MIC input
Right channel line input /
D4
D6
D5
RIN1
RIN2
Analogue Input
Analogue Input
Right channel positive differential MIC input
Right channel line input /
RIN3 /
GPI8
Analogue Input /
Digital Input
Right channel negative differential MIC input /
Accessory or button detect input pin
Left channel line input /
E5
RIN4 /
RXP
Analogue Input
Left channel positive differential MIC input /
Mono differential positive input (Rx voice +)
Digital core supply
F6
E6
G6
A6
A3
A5
B3
B2
B1
F5
G5
G4
F3
E4
E2
F2
F1
E3
A1
C1
B4
B5
A4
C4
C2
D1
D2
E1
C3
G2
DCVDD
DGND
DBVDD
AVDD
Supply
Supply
Digital ground (Return path for both DCVDD and DBVDD)
Digital buffer (I/O) supply
Supply
Supply
Analogue supply
AGND
HPVDD
HPGND
SPKVDD
SPKGND
MCLK
Supply
Analogue ground (Return path for AVDD)
Headphone supply
Supply
Supply
Headphone ground (Return path for HPVDD)
Supply for speaker driver
Supply
Supply
Ground for speaker driver (Return path from SPKVDD)
Master clock
Digital Input
BCLK
Digital Input / Output
Digital Input / Output
Digital Input
Audio interface bit clock
DACLRC
DACDAT
GPIO1
MODE
CSB / ADDR
SCLK
Audio interface DAC left / right clock
DAC digital audio data
Digital Input / Output
Digital Input
GPIO1 pin
Selects 2-wire or 3/4 -wire control
3/4 -wire chip select or 2-wire address select
Control interface clock input
Digital Input
Digital Input
SDIN
Digital Input / Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Digital Input / Output
Control interface data input / 2-wire acknowledge output
Speaker positive output
SPKP
SPKN
Speaker negative output
LOUT
Left headphone output
ROUT
Right headphone output
OUT3
Inverted left headphone output / Mono inverted output
Inverted right headphone output / Mono non-inverted output
Negative left line output / Positive right line output
Positive left line output
OUT4
LON
LOP
RON
Negative right line output / Positive left line output
Positive right line output
ROP
VMID
Midrail voltage decoupling capacitor
Alternative BCLK / GPIO pin
GPIO3 /
BCLK2
PP, May 2008, Rev 3.1
5
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
