Q305: WM8742 DAC-3
PIN DESCRIPTION (SOFTWARE CONTROL MODE)
PIN
NAME
TYPE
DESCRIPTION
PCM MODE
8FS PCM MODE
DSD MODES
22
OSR/DSDR
Digital input
Unused
Unused
Unused
23
24
IWO /
DOUT
Digital input
tri-level
Unused
Unused
DSD right input data in
MODE /
LRSEL
Digital input,
tri-level
When DIFFHW=0:
0 = hardware mode
1 = 3-wire software mode
Z = 2-wire software mode
When DIFFHW=1:
0 = left channel mode
1 = right channel mode
When DIFFHW=0:
0 = hardware mode
1 = 3-wire software mode
Z = 2-wire software mode
When DIFFHW=1:
0 = left channel mode
1 = right channel mode
When DIFFHW=0:
0 = hardware mode
1 = 3-wire software mode
Z = 2-wire software mode
When DIFFHW=1:
0 = left channel mode
1 = right channel mode
25
MUTEB /
SDOUT
Digital input or
output
Softmute control:
0 = mute active
1 = normal operation
NOTE: In 3-wire mode
only, this pin may be
used as a bufferd
control interface data
output
Softtmute control
0 = mute control
1 = normal operation
Softtmute control
0 = mute control
1 = normal operation
NOTE: In DSD is an
analogue mute
26
27
28
SDIN /
DEEMPH
Digital input,
tri-level
Select control interface
data input
Select control interface
data input
Select control interface
data input
SCLK /
DSD
Digital input
Serial control interface
clock input
Serial control interface
clock input
Serial control interface
clock input
CSB /
SADDR /
I S
2
Digital input
3-wire mode: serial
control interface latch
2-wire mode: device
adress select
3-wire mode: serial
control interface latch
2-wire mode: device
adress select
3-wire mode: serial
control interface latch
2-wire mode: device
adress select
C-S5VL
IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION
