Production Data
WM8741
MUTE MODES
0.000
0.020
0.040
0.060
0.080
0.100
0.120
0.140
Time (s)
Figure 24 Application and Release of Soft Mute
Figure 24 shows the application and release of SOFTMUTE for a full amplitude sinusoid being played
at 48kHz sampling rate. When SOFTMUTE (lower trace) is asserted, the WM8741 output (upper
trace) begins to decay exponentially from the DC level of the last input sample. The output decays
towards VMID in 1022x4/fs seconds. When SOFTMUTE is de-asserted, the signal gain will return to
its previous value.
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
Soft mute select
R4
PCM Control
04h
3
SOFTMUTE
0
0 = Normal operation
1 = Soft mute both channels
Table 31 Soft Mute Control
PD, Rev 4.2, October 2009
33
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
