WM8983 Datasheet, PDF (4/88 Pages) Wolfson Microelectronics plc – Mobile Multimedia CODEC with 1W Speaker Driver

WM8983
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PIN DESCRIPTION
PIN
NAME
TYPE
1
LIP
Analogue input
2
LIN
Analogue input
3
L2/GPIO2
Analogue input
4
RIP
Analogue input
5
RIN
Analogue input
6
R2/GPIO3
Analogue input
7
LRC
Digital Input / Output
8
BCLK
Digital Input / Output
9
ADCDAT
Digital Output
10
DACDAT
Digital Input
11
MCLK
Digital Input
12
DGND
Supply
13
DCVDD
Supply
14
DBVDD
Supply
15
CSB/GPIO1
Digital Input / Output
16
SCLK
Digital Input
17
SDIN
Digital Input / Output
18
MODE
Digital Input
19
AUXL
Analogue input
20
AUXR
Analogue input
21
OUT4
Analogue Output
22
OUT3
Analogue Output
23
ROUT2
Analogue Output
24
AGND2
Supply
25
LOUT2
Analogue Output
26
AVDD2
Supply
27
VMID
Reference
28
AGND1
Supply
29
ROUT1
30
LOUT1
31
AVDD1
Analogue Output
Analogue Output
Supply
32
MICBIAS
Analogue Output
DESCRIPTION
Left MIC pre-amp positive input
Left MIC pre-amp negative input
Left channel line input/secondary mic pre-amp positive input/GPIO2 pin
Right MIC pre-amp positive input
Right MIC pre-amp negative input
Right channel line input/secondary mic pre-amp positive input/GPIO3 pin
DAC and ADC sample rate clock
Digital audio bit clock
ADC digital audio data output
DAC digital audio data input
Master clock input
Digital ground
Digital core logic supply
Digital buffer (I/O) supply
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
Left auxillary input
Right auxillary input
right line output or mono mix output
mono or left line output
Headphone or line output right 2
Analogue ground (feeds ROUT2/LOUT2 and OUT3/OUT4)
Headphone or line output left 2
Analogue supply (feeds output amplifiers ROUT2/LOUT2 and OUT3/OUT4)
Decoupling for ADC and DAC reference voltage
Analogue ground (feeds all input amplifiers, PLL, ADC and DAC, internal
bias circuits, output amplifiers LOUT1, ROUT1)
Headphone or line output right 1
Headphone or line output left 1
Analogue supply (feeds all input amplifiers, PLL, ADC and DAC, internal
bias circuits, output amplifiers LOUT1, LOUT2))
Microphone bias
Note:
It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.
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PP Rev 1.1 August 2005
4