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WM8351 Datasheet(PDF) 252 Page - Wolfson Microelectronics plc |
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WM8351 Datasheet(HTML) 252 Page - Wolfson Microelectronics plc |
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252 / 330 page  WM8351 Production Data w PD, April 2012, Rev 4.5 252 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R74 (4Ah) Mic Bias Control 15 MICB_ENA 0 Microphone bias enable 0 = OFF (high impedance output) 1 = ON 14 MICB_SEL 0 Microphone bias voltage control: 0 = 0.9 * AVDD 1 = 0.75 * AVDD 7 MIC_DET_ENA 0 Enable MIC detect: 0 = Disabled 1 = Enabled 4:2 MCDTHR[2:0] 000 Threshold for bias current detection 000 = 160µA 001 = 330µA 010 = 500µA 011 = 680µA 100 = 850µA 101 = 1000µA 110 = 1200µA 111 = 1400µA These threshold currents scale proportionally with AVDD. The values given are for AVDD=3.3V. 1:0 MCDSCTHR[1:0] 00 Threshold for microphone short-circuit detection 00 = 400µA 01 = 900µA 10 = 1350µA 11 = 1800µA These threshold currents scale proportionally with AVDD. The values given are for AVDD=3.3V. Register 4Ah Mic Bias Control |
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