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WM8962B Datasheet(PDF) 59 Page - Wolfson Microelectronics plc

Part # WM8962B
Description  Ultra-Low Power Stereo CODEC with Audio Enhancement DSP, 1W Stereo Class D Speaker Drivers and Ground Referenced Headphone Drivers
PDF  295 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8962B Datasheet(HTML) 59 Page - Wolfson Microelectronics plc

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WM8962
Rev 4.3
59
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R19 (13h)
ALC3
12:10
ALC_NGATE_GAIN
[2:0]
111
Noise Gate Gain level. This is the
PGA gain level used within the
ALC Noise Gate function.
000 = -23.25dB
001 = -18dB
010 = -12dB
011 = -6dB
100 = 0dB
101 = +6dB
110 = +12dB
111 = +18dB
R20 (14h)
Noise Gate
15:12
ALC_NGATE_DCY
[3:0]
0011
Sets the Noise Gate Gain Decay
Rate (time taken to ramp up to
the ALC_NGATE_GAIN level),
measured in time per 1.5dB step.
If ALC_MODE = 0
0000 = 0.41ms / step
0001 = 0.82ms / step
…doubling with each step to…
1010 = 420ms / step
1011 = 840ms / step
1100 to 1111 = Reserved
If ALC_MODE = 1
0000 = 0.082ms / step
0001 = 0.164ms / step
…doubling with each step to…
1010 = 83.9ms / step
1011 = 168ms / step
1100 to 1111 = Reserved
Note that when 88.2kHz or 96kHz
sample rate is selected, the Noise
Gate Gain Decay time is defined
as for the ALC_MODE=0 case
above.
See Table 17 for further details.



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