WM8741
Production Data
PIN
NAME
TYPE
DESCRIPTION
PCM MODE
8FS PCM MODE
DSD MODES
24
MODE /
LRSEL
Digital input,
tri-level
When DIFFHW=0:
0 = hardware mode
When DIFFHW=0:
0 = hardware mode
When DIFFHW=0:
0 = hardware mode
1 = 3-wire software mode 1 = 3-wire software mode 1 = 3-wire software mode
Z = 2-wire software mode Z = 2-wire software mode Z = 2-wire software mode
When DIFFHW=1:
When DIFFHW=1:
0 = left channel mono
1 = right channel mono
Softmute Control
When DIFFHW=1:
0 = left channel mono
1 = right channel mono
Softute Control
0 = left channel mono
1 = right channel mono
25
MUTEB /
SDOUT
Digital input or Softmute Control
output:
0 = mute active
0 = mute active
0 = mute active
Internal pull-up
1 = normal operation
1 = normal operation
1 = normal operation
NOTE: In 3-wire mode
only, this pin may be
used as a buffered
control interface data
output
Note: In DSD Direct
mode this is an analogue
mute
26
27
28
SDIN /
DEEMPH
SCLK /
DSD
Digital input
Tri-level
Serial control interface
data input
Serial control interface
data input
Serial control interface
data input
Digital input
Serial control interface
clock input
Serial control interface
clock input
Serial control interface
clock input
CSB /
Digital input
3-wire mode: serial
3-wire mode: serial
3-wire mode: serial
control interface latch
control interface latch
control interface latch
SADDR /
I2S
2-wire mode: device
address select
2-wire mode: device
address select
2-wire mode: device
address select
Notes:
1. Undefined inputs should be connected to DVDD or DGND
2. Tri-level pins which require the ‘Z’ state to be selected should be left floating (open)
PD, Rev 4.2, October 2009
6
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
