WM8741
Production Data
PIN
NAME
TYPE
DESCRIPTION
PCM MODE
When DIFFHW=0:
DSD DIRECT MODE
24
MODE /
LRSEL
Digital input,
tri-level
When DIFFHW=0:
0 = hardware mode
0 = hardware mode
1 = 3-wire software mode
Z = 2-wire software mode
When DIFFHW=1:
1 = 3-wire software mode
Z = 2-wire software mode
When DIFFHW=1:
0 = left channel mono
1 = right channel mono
0 = left channel mono
1 = right channel mono
Analogue Mute Control
0 = mute active
25
26
MUTEB /
SDOUT
Digital input or Softmute Control
output:
0 = mute active
Internal pull-up
1 = normal operation
1 = normal operation
SDIN /
Digital input
Tri-level
De-emphasis Control
0 = normal operation
1 = de-emphasis applied
Z = anti-clipping digital filter mode
HW Mode Select:
Unused
DEEMPH
27
28
SCLK /
DSD
Digital input
Digital input
HW Mode Select:
0 = PCM
0 = PCM
1 = DSD Direct
1 = DSD Direct
Unused
CSB /
SADDR /
I2S
Controls audio interface format – see
Table 46
Notes:
1. Undefined inputs should be connected to DVDD or DGND
2. Tri-level pins who require the ‘Z’ state to be selected should be left floating (open)
PD, Rev 4.2, October 2009
8
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
