wm8944 Wolfson Microelectronics plc, wm8944 Datasheet - Page 4

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wm8944

Manufacturer Part Number
wm8944
Description
Mono Low-power Codec With Video Buffer
Manufacturer
Wolfson Microelectronics plc
Datasheet
WM8944
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PIN DESCRIPTION
PIN NO
A1
A2
A3
A4
A5
A6
B1
B2
B3
B4
B5
B6
C1
C2
C3
C4
C5
C6
D1
D2
D3
D4
D5
D6
E1
E2
E3
E4
E5
E6
F1
F2
F3
F4
F5
F6
CIFMODE/GPIO3
IN1L/DMICDAT
SDOUT/GPIO4
LINEOUTL
LDOVOUT
SPKOUTR
CS
SPKOUTL
¯ ¯ /GPIO2
SPKVDD
LDOVDD
ADCDAT
MICBIAS
DACDAT
VBREFR
DCVDD
VBOUT
DBVDD
VMIDC
LRCLK
GPIO1
MCLK
NAME
AUX1
AUX2
BCLK
SCLK
VBIN
GND
DNC
DNC
DNC
DNC
DNC
IN2L
DNC
DNC
SDA
Supply
Supply
Supply
Analogue Output
N/A
N/A
Analogue Output
Analogue Output
Supply
N/A
N/A
Analogue Input
Analogue Output
N/A
Digital Output
Analogue Output
Analogue Input
Analogue Input
Analogue Output
Analogue Output
Digital Input / Output
Analogue Input / Digital Input
N/A
N/A
Analogue Input
Digital Input / Output
Digital Input / Output
Digital Input / Output
Supply
Digital Input / Output
Digital Input
Digital Input
Digital Input / Output
Digital Input / Output
Supply
Digital Input
TYPE
Supply for speaker driver
LDO output
LDO supply input
Midrail voltage decoupling capacitor
Do Not Connect
Do Not Connect
Right speaker mixer output
Left speaker mixer output
Ground
Do Not Connect
Do Not Connect
Aux input (audio or AUXADC input)
Left line mixer output
Do Not Connect
ADC / Digital Microphone digital audio data
Microphone bias
Aux input (audio or AUXADC input)
Left input 2
Video buffer current reference resistor connection
Video buffer output
Chip Select / GPIO2
Left input 1 / Digital Microphone data input
Do Not Connect
Do Not Connect
Video buffer input
Audio interface bit clock
Audio interface left / right clock
Control interface data output / GPIO4
Digital core supply
Control interface data input / output
Master clock
DAC digital audio data
GPIO1
Control interface mode select / GPIO3
Digital buffer (I/O) supply
Control interface clock input
DESCRIPTION
Product Brief, October 2009, Rev 1.1
Product Brief
4

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