WM8940(2011) Ver la hoja de datos (PDF) - Wolfson Microelectronics plc
Número de pieza
componentes Descripción
Fabricante
WM8940 Datasheet PDF : 91 Pages
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WM8940
PIN DESCRIPTION
PIN
NAME
TYPE
1
MICBIAS Analogue Output
2
AVDD
Supply
3
AGND
Supply
4
DCVDD
Supply
5
DBVDD
Supply
6
DGND
Supply
7
ADCDAT Digital Output
8
DACDAT Digital Input
9
FRAME
Digital Input / Output
10
BCLK
Digital Input / Output
11
MCLK
Digital Input
12
CSB/GPIO Digital Input / Output
13
SCLK
Digital Input
14
SDIN
Digital Input / Output
15
MODE / GPIO Digital Input
16
MONOOUT Analogue Output
17
SPKOUTP Analogue Output
18
SPKGND Supply
19
SPKOUTN Analogue Output
20
SPKVDD Supply
21
AUX
Analogue Input
22
VMID
Reference
23
MICN
Analogue Input
24
MICP
Analogue Input
Production Data
DESCRIPTION
Microphone bias
Analogue supply
Analogue ground
Digital Supply (Core)
Digital supply (Input/Output)
Digital ground
ADC digital audio data output
DAC digital audio data input
DAC and ADC sample rate clock or frame synch
Digital audio port clock
Master clock input
3-Wire control interface chip select or GPIO 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 mode selection pin or GPIO pin.
Mono output
Speaker output positive
Speaker ground
Speaker output negative
Speaker supply
Auxiliary analogue input
Decoupling for midrail reference voltage
Microphone negative input (common mode)
Microphone positive input
Note:
1. It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.
2. Refer to the application note WAN_0118 on “Guidelines on How to Use QFN Packages and Create Associated PCB
Footprints”
w
PD, Rev 4.3, November 2011
6
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