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WM8281ECS/R Scheda tecnica(PDF) 210 Page - Cirrus Logic

Il numero della parte WM8281ECS/R
Spiegazioni elettronici  Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation
PDF  392 Pages
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Produttore elettronici  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8281ECS/R Scheda tecnica(HTML) 210 Page - Cirrus Logic

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WM8281
210
Rev 4.0
Table 77. The external circuit configuration is illustrated in Figure 65.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R659
(0293h)
Accessory
Detect
Mode 1
13
ACCDET_SRC
0
Accessory Detect / Headphone
Feedback pin select
0 = Accessory detect on MICDET1,
Headphone ground feedback on
HPOUT1FB1
1 = Accessory detect on MICDET2,
Headphone ground feedback on
HPOUT1FB2
2:0
ACCDET_MODE
[2:0]
000
Accessory Detect Mode Select
000 = Microphone detect (MICDETn,
discrete mode)
001 = Headphone detect (HPDETL)
010 = Headphone detect (HPDETR)
011 = Reserved
100 = Headphone detect (MICDETn)
101 = Reserved
110 = Reserved
111 = Microphone detect (MICDETn,
ADC mode)
Note that the MICDETn measurements
are implemented on either the MICDET1
or MICDET2 pins, depending on the
ACCDET_SRC register bit.
R675
(02A3h)
Mic Detect 1
15:12
MICD_BIAS_STA
RTTIME [3:0]
0001
Mic Detect Bias Startup Delay
(If MICBIAS is not enabled already, this
field selects the delay time allowed for
MICBIAS to startup prior to performing
the MICDET function.)
0000 = 0ms (continuous)
0001 = 0.25ms
0010 = 0.5ms
0011 = 1ms
0100 = 2ms
0101 = 4ms
0110 = 8ms
0111 = 16ms
1000 = 32ms
1001 = 64ms
1010 = 128ms
1011 = 256ms
1100 to 1111 = 512ms
11:8
MICD_RATE [3:0]
0001
Mic Detect Rate
(Selects the delay between successive
MICDET measurements.)
0000 = 0ms (continuous)
0001 = 0.25ms
0010 = 0.5ms
0011 = 1ms
0100 = 2ms
0101 = 4ms
0110 = 8ms
0111 = 16ms
1000 = 32ms
1001 = 64ms
1010 = 128ms
1011 = 256ms
1100 to 1111 = 512ms



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