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WM8994ECS/R Datasheet(PDF) 156 Page - Cirrus Logic

No. de pieza WM8994ECS/R
Descripción Electrónicos  Multi-channel Audio Hub CODEC for Smartphones
PDF  363 Pages
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Fabricante Electrónico  CIRRUS [Cirrus Logic]
Página de inicio  http://www.cirrus.com
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WM8994ECS/R Datasheet(HTML) 156 Page - Cirrus Logic

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WM8994
156
Rev 4.6
The DRC Signal Detect signals are inputs to the Interrupt control circuit. An interrupt event is triggered
on the rising edge of the DRC Signal Detect signals. The associated interrupt bits are latched once
set; they can be polled at any time or used to control the IRQ signal. See “Interrupts” for more details
of the Interrupt event handling.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R1088
(0440h)
AIF1 DRC1
(1)
15:11
AIF1DRC1_SIG_
DET_RMS [4:0]
00000
AIF1 DRC1 Signal Detect RMS
Threshold.
This is the RMS signal level for signal
detect to be indicated when
AIF1DRC1_SIG_DET_MODE=1.
00000 = -30dB
00001 = -31.5dB
…. (1.5dB steps)
11110 = -75dB
11111 = -76.5dB
10:9
AIF1DRC1_SIG_
DET_PK [1:0]
00
AIF1 DRC1 Signal Detect Peak
Threshold.
This is the Peak/RMS ratio, or Crest
Factor, level for signal detect to be
indicated when
AIF1DRC1_SIG_DET_MODE=0.
00 = 12dB
01 = 18dB
10 = 24dB
11 = 30dB
7
AIF1DRC1_SIG_
DET_MODE
1
AIF1 DRC1 Signal Detect Mode
0 = Peak threshold mode
1 = RMS threshold mode
6
AIF1DRC1_SIG_
DET
0
AIF1 DRC1 Signal Detect Enable
0 = Disabled
1 = Enabled
R1104
(0450h)
AIF1 DRC2
(1)
15:11
AIF1DRC2_SIG_
DET_RMS [4:0]
00000
AIF1 DRC2 Signal Detect RMS
Threshold.
This is the RMS signal level for signal
detect to be indicated when
AIF1DRC2_SIG_DET_MODE=1.
00000 = -30dB
00001 = -31.5dB
…. (1.5dB steps)
11110 = -75dB
11111 = -76.5dB
10:9
AIF1DRC2_SIG_
DET_PK [1:0]
00
AIF1 DRC2 Signal Detect Peak
Threshold.
This is the Peak/RMS ratio, or Crest
Factor, level for signal detect to be
indicated when
AIF1DRC2_SIG_DET_MODE=0.
00 = 12dB
01 = 18dB
10 = 24dB
11 = 30dB
7
AIF1DRC2_SIG_
DET_MODE
1
AIF1 DRC2 Signal Detect Mode
0 = Peak threshold mode
1 = RMS threshold mode



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