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WM1811A Scheda tecnica(PDF) 41 Page - Wolfson Microelectronics plc

Il numero della parte WM1811A
Spiegazioni elettronici  Multi-Channel Audio Hub CODEC for Smartphones
PDF  328 Pages
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Produttore elettronici  WOLFSON [Wolfson Microelectronics plc]
Homepage  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM1811A Scheda tecnica(HTML) 41 Page - Wolfson Microelectronics plc

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Production Data
WM1811A
w
PD, November 2013, Rev 4.1
41
MICBIAS2 (eg. for a digital microphone supply), then the respective MICBIAS generator must be
configured in Bypass mode.
The MICBIAS configuration is illustrated in Figure 10.
Figure 10 MICBIAS Generator
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R1
(0001h)
Power
Managem
ent (1)
5
MICB2_ENA
0
Microphone Bias 2 Enable
0 = Disabled
1 = Enabled
4
MICB1_ENA
0
Microphone Bias 1 Enable
0 = Disabled
1 = Enabled
R61
(003Dh)
MICBIAS
1
5
MICB1_RATE
1
Microphone Bias 1 Rate
0 = Fast start-up / shut-down
1 = Pop-free start-up / shut-down
4
MICB1_MODE
1
Microphone Bias 1 Mode
0 = Regulator mode
1 = Bypass mode
3:1
MICB1_LVL [2:0]
100
Microphone Bias 1 Voltage Control
(when MICB1_MODE = 0)
000 = 1.5V
001 = 1.8V
010 = 1.9V
011 = 2.0V
100 = 2.2V
101 = 2.4V
110 = 2.5V
111 = 2.6V
0
MICB1_DISCH
1
Microphone Bias 1 Discharge
0 = MICBIAS1 floating when disabled
1 = MICBIAS1 discharged when disabled
R62
(003Eh)
MICBIAS
5
MICB2_RATE
1
Microphone Bias 2 Rate
0 = Fast start-up / shut-down
1 = Pop-free start-up / shut-down



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