wm8742 Wolfson Microelectronics plc, wm8742 Datasheet - Page 33

• Manufacturer Part Number: wm8742
• Description: 24-bit 192khz Dac With Advanced Digital Filtering
• Manufacturer: Wolfson Microelectronics plc

Production Data
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MUTE MODES
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 V
previous value.
Table 31 Soft Mute Control
REGISTER ADDRESS
0.000
PCM Control
MID
04h
R4
in 1022x4/fs seconds. When SOFTMUTE is de-asserted, the signal gain will return to its
0.020
0.040
BIT
3
SOFTMUTE
LABEL
0.060
Time (s)
0.080
DEFAULT
0
0.100
Soft mute select
0 = Normal operation
1 = Soft mute both channels
0.120
DESCRIPTION
PD, Rev 4.2, August 2009
0.140
WM8742
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