Q305: WM8742 DAC-5
PIN DESCRIPTION (HARDWARE CONTROL MODE)
PIN
NAME
TYPE
DESCRIPTION
PCM MODE
DSD DIRECT MODE
22
OSR/DSDR
Digital input
Tri-level
Controls internal oversampling rate:
0 = low rate
Z = mediam rate
1 = high rate
DSD right audio data in
23
24
IWO /
DOUT
Digital
input/output
Controls audio interface wordlength
Unused
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
25
MUTEB /
SDOUT
Digital input or
output
Softmute control:
0 = mute active
1 = normal operation
Softtmute control
0 = mute control
1 = normal operation
26
27
28
SDIN /
DEEMPH
Digital input,
tri-level
De-emphasis control
0 = normal operation
1 = de-emphasis applied
Z = anti-clipping digital filter mode
Unused
SCLK /
DSD
Digital input
HW Mode select:
0 = PCM
1 = DSD direct
CSB /
SADDR /
I S
2
Digital input
Controls audio interface format
HW Mode select:
0 = PCM
1 = DSD direct
Unused
C-S5VL
IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION
