WM8731 Wolfson Microelectronics Ltd., WM8731 Datasheet - Page 7

• Manufacturer Part Number: WM8731
• Description: WM8731 : Low Power Audio Codec With Integrated Headphone Driver
• Manufacturer: Wolfson Microelectronics Ltd.

WM8731
PIN DESCRIPTION
Note:
1.
28 PIN
SSOP
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Pull Up/Down only present when Control Register Interface ACTIVE=0 to conserve power.
1
2
3
4
5
6
7
8
9
28 PIN
QFN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
5
6
7
8
9
1
2
3
4
XTI/MCLK
RHPOUT
CLKOUT
DACDAT
DACLRC
ADCDAT
ADCLRC
LHPOUT
MICBIAS
RLINEIN
LLINEIN
DBVDD
HPVDD
HPGND
DCVDD
MODE
DGND
NAME
ROUT
AVDD
AGND
MICIN
LOUT
BCLK
VMID
SCLK
SDIN
CSB
XTO
Digital Input/Output
Digital Input/Output
Digital Input/Output
Digital Input/Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Input
Analogue Input
Analogue Input
Digital Output
Digital Output
Digital Output
Digital Input
Digital Input
Digital Input
Digital Input
Digital Input
Ground
Ground
Ground
Supply
Supply
Supply
Supply
TYPE
Digital Buffers VDD
Buffered Clock Output
Digital Audio Bit Clock, Pull Down, (see Note 1)
DAC Digital Audio Data Input
DAC Sample Rate Left/Right Clock, Pull Down (see Note 1)
ADC Digital Audio Data Output
ADC Sample Rate Left/Right Clock, Pull Down (see Note 1)
Headphone VDD
Left Channel Headphone Output
Right Channel Headphone Output
Headphone GND
Left Channel Line Output
Right Channel Line Output
Analogue VDD
Analogue GND
Mid-rail reference decoupling point
Electret Microphone Bias
Microphone Input (AC coupled)
Right Channel Line Input (AC coupled)
Left Channel Line Input (AC coupled)
Control Interface Selection, Pull Up (see Note 1)
3-Wire MPU Chip Select/ 2-Wire MPU interface address
selection, active low, Pull up (see Note 1)
3-Wire MPU Data Input / 2-Wire MPU Data Input
3-Wire MPU Clock Input / 2-Wire MPU Clock Input
Crystal Input or Master Clock Input (MCLK)
Crystal Output
Digital Core VDD
Digital GND
DESCRIPTION
AI Rev 2.3 August 2001
Advanced Information
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