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WM8991 Datasheet(PDF) 6 Page - Wolfson Microelectronics plc

Part # WM8991
Description  Mobile Multimedia CODEC with Dual-Mode Class AB/D Speaker Driver
PDF  174 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8991 Datasheet(HTML) 6 Page - Wolfson Microelectronics plc

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WM8991
Pre-Production
w
PP, May 2008, Rev 3.1
6
PIN DESCRIPTION
PIN NO
NAME
TYPE
DESCRIPTION
B8
MICBIAS
Analogue Output
Microphone bias
D1
LIN1
Analogue Input
Left channel single-ended MIC input /
Left channel negative differential MIC input
D2
LIN2
Analogue Input
Left channel line input /
Left channel positive differential MIC input
C1
LIN3 /
GPI7
Analogue Input /
Digital Input
Left channel line input /
Left channel negative differential MIC input /
Accessory or button detect input pin
C2
LIN4 /
RXN
Analogue Input
Left channel line input /
Left channel positive differential MIC input /
Mono differential negative input (Rx voice -)
E1
RIN1
Analogue Input
Right channel single-ended MIC input /
Right channel negative differential MIC input
E2
RIN2
Analogue Input
Right channel line input /
Right channel positive differential MIC input
F1
RIN3 /
GPI8
Analogue Input /
Digital Input
Right channel line input /
Right channel negative differential MIC input /
Accessory or button detect input pin
F2
RIN4 /
RXP
Analogue Input
Left channel line input /
Left channel positive differential MIC input /
Mono differential positive input (Rx voice +)
H1
DCVDD
Supply
Digital core supply
G1
G2
DGND
Supply
Digital ground (Return path for both DCVDD and DBVDD)
J1
DBVDD
Supply
Digital buffer (I/O) supply
A1
B1
AVDD
Supply
Analogue supply
A6
B6
D4
D5
D6
E4
E5
E6
F4
F5
F6
AGND
Supply
Analogue ground (Return path for AVDD)
Note: D4 to F6 are GND_PADDLES for thermal conduction and must
be connected on the PCB for thermal reasons.
A2
A3
HPVDD
Supply
Headphone supply
A4
A5
HPGND
Supply
Headphone ground (Return path for HPVDD)
A7
A8
SPKVDD
Supply
Supply for speaker driver
C8
D8
SPKGND
Supply
Ground for speaker driver (Return path from SPKVDD)
J2
MCLK
Digital Input
Master clock
J3
BCLK
Digital Input / Output
Audio interface bit clock
H5
DACLRC
Digital Input / Output
Audio interface DAC left / right clock
J5
DACDAT
Digital Input
DAC digital audio data
H4
ADCLRC /
GPIO1
Digital Input / Output
Audio interface ADC left / right clock / GPIO1 pin
J4
ADCDAT
Digital Output
ADC digital audio data



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