WM8742 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'WM8742' PDF : 65 Pages View PDF
Production Data
MUTE MODES
WM8742
0.000
0.020
0.040
0.060
0.080
Time (s)
0.100
0.120
0.140
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 WM8742 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
R4
PCM Control
04h
3 SOFTMUTE
0
Table 31 Soft Mute Control
Soft mute select
0 = Normal operation
1 = Soft mute both channels
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PD, Rev 4.3, February 2013
33
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