Production Data
WM8758B
PIN DESCRIPTION
PIN
1
NAME
LIP
TYPE
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Digital Input / Output
Digital Input / Output
Digital Output
Digital Input
DESCRIPTION
Left MIC pre-amp positive input
Left MIC pre-amp negative input
2
LIN
Left channel line input/secondary mic pre-amp positive input/GPIO2 pin
Right MIC pre-amp positive input
3
L2/GPIO2
RIP
4
Right MIC pre-amp negative input
5
RIN
Right channel line input/secondary mic pre-amp positive input/GPIO3 pin
DAC and ADC sample rate clock
6
R2/GPIO3
LRC
7
Digital audio bit clock
8
BCLK
ADC digital audio data output
9
ADCDAT
DACDAT
MCLK
DAC digital audio data input
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Digital Input
Master clock input
Supply
Digital ground
DGND
DCVDD
DBVDD
CSB/GPIO1
SCLK
Supply
Digital core logic supply
Supply
Digital buffer (I/O) supply
Digital Input / Output
Digital Input
3-Wire control interface chip select / GPIO1 pin
3-Wire control interface clock input / 2-wire control interface clock input
3-Wire control interface data input / 2-Wire control interface data input
Control interface selection
Digital Input / Output
Digital Input
SDIN
MODE
HP_COM
LINE_COM
OUT4
Analogue Input
Analogue Input
Analogue Output
Analogue Output
Analogue Output
Supply
Headphone ground common feedback input
Line out ground common feedback input
Right line output / mono mix output
Left line output / mono mix output
OUT3
Line output right 2
ROUT2
AGND2
LOUT2
AVDD2
VMID
Analogue ground (return path for ROUT2/LOUT2)
Line output left 2
Analogue Output
Supply
Analogue supply (supply for output amplifiers ROUT2/LOUT2)
Decoupling for ADC and DAC reference voltage
Reference
Supply
Analogue ground (return path for all input amplifiers, PLL, ADC and
DAC, internal bias circuits, output amplifiers LOUT1, ROUT1 and
OUT3/OUT4 on AVDD1 AGND1)
AGND1
Analogue Output
Analogue Output
Supply
Line or headphone output right 1
Line or headphone output left 1
29
30
31
ROUT1
LOUT1
AVDD1
Analogue supply (feeds all input amplifiers, PLL, ADC and DAC, internal
bias circuits, output amplifiers LOUT1, ROUT1))
Analogue Output
Microphone bias
32
MICBIAS
Note:
It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.
PD, Rev 4.4, January 2012
w
5
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
