wm8594seft-v Wolfson Microelectronics plc, wm8594seft-v Datasheet - Page 31
wm8594seft-v
Manufacturer Part Number
wm8594seft-v
Description
24-bit 192khz 2vrms Multi-channel Codec
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8594SEFT-V.pdf
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Production Data
w
SOFTMUTE
A soft mute can be applied to DAC1 and DAC2 independently.
Table 18 DAC Softmute Control
Figure 18 Application and Release of DAC Soft Mute
Figure 18 shows the applications and release of DAC soft mute whilst a full amplitude sinusoid is
being played at 48kHz sampling rate. When DACx_MUTE (lower trace) is asserted, the output
(upper trace) of the appropriate DAC will decay exponentially from the DC level of the last input
sample towards DACVMID with a time constant of approximately 64 input samples.
DACx_MUTE is de-asserted, the output will restart immediately from the current input sample.
Table 17 DAC Digital Volume Control
DAC1_CTRL1
DAC2_CTRL1
DAC1_CTRL1
DAC2_CTRL1
REGISTER
REGISTER
ADDRESS
ADDRESS
-0.5
-1.5
-2.5
1.5
0.5
-1
-2
1
0
02h
07h
02h
07h
R2
R7
R2
R7
0
BIT
BIT
0.001
7
7
9
9
LABEL
_ZCEN
_ZCEN
LABEL
DAC1_
DAC2_
MUTE
MUTE
DAC1
DAC2
0.002
DEFAULT
DEFAULT
Time(s)
1
0
0
0.003
DAC Digital Volume Control Zero Cross
Enable
0 = Do not use zero cross
1 = Use zero cross
DAC Softmute
0 = Normal operation
1 = Softmute applied
0.004
DESCRIPTION
DESCRIPTION
0.005
PD Rev 4.1 July 2008
WM8594
0.006
When
31
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