Production Data
WM8741
PIN DESCRIPTION (SOFTWARE CONTROL MODE)
PIN
NAME
TYPE
DESCRIPTION
PCM MODE
8FS PCM MODE
DSD MODES
1
2
3
4
LRCLK /
DSDL
Digital input
Digital input
Digital input
Audio interface left/right
clock input
Audio interface left/right
clock input
DSD left audio data in
Unused
DIN /
Audio interface data
input
Audio interface left data
input
DINL
BCLK /
DSD64CLK
FSEL /
DINR
Audio interface bit clock
input
Audio interface bit clock
input
64fs system clock input
Unused
Digital input
Tri-level
Unused
Audio interface right data
input
5
6
MCLK
Digital input
Master clock input
Master clock input
Unused
DIFFHW
Digital input
Differential mono mode
selection
Differential mono mode
selection
Differential mono mode
selection
Internal pull-
down
0 = normal operation
0 = normal operation
0 = normal operation
1 = differential mono
mode
1 = differential mono
mode
1 = differential mono
mode
7
8
DGND
DVDD
Supply
Supply
Digital ground
Digital ground
Digital ground
Digital supply
Digital supply
Digital supply
9
AVDDR
AGNDR
VMIDR
Analogue Input Right analogue positive
reference
Right analogue positive
reference
Right analogue positive
reference
10
11
Analogue Input Right analogue negative
reference
Right analogue negative
reference
Right analogue negative
reference
Analogue
Output
Right analogue midrail
decoupling pin
Right analogue midrail
decoupling pin
Right analogue midrail
decoupling pin
12
13
VOUTRP
VOUTRN
Analogue
Output
Right DAC positive
output
Right DAC positive
output
Right DAC positive
output
Analogue
Output
Right DAC negative
output
Right DAC negative
output
Right DAC negative
output
14
15
16
AGND
AVDD
Supply
Analogue ground
Analogue ground
Analogue ground
Supply
Analogue supply
Analogue supply
Analogue supply
VOUTLN
Analogue
Output
Left DAC negative output Left DAC negative output Left DAC negative output
17
18
VOUTLP
VMIDL
Analogue
Output
Left DAC positive output
Left DAC positive output
Left DAC positive output
Analogue
Output
Left analogue midrail
decoupling pin
Left analogue midrail
decoupling pin
Left analogue midrail
decoupling pin
19
20
21
22
AGNDL
AVDDL
Analogue Input Left analogue negative
reference
Left analogue negative
reference
Left analogue negative
reference
Analogue Input Left analogue positive
reference
Left analogue positive
reference
Left analogue positive
reference
ZFLAG
Digital Output
Zero flag output
Zero flag output
Zero flag output
OSR/DSDR
Digital input
Tri-level
Unused
Unused
DSD right audio data in
23
IWO /
DOUT
Digital
input/output
Buffered audio interface
data output
Unused
Unused
PD, Rev 4.2, October 2009
5
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
