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WM8953ECS/RV Scheda tecnica(PDF) 95 Page - Wolfson Microelectronics plc |
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WM8953ECS/RV Scheda tecnica(HTML) 95 Page - Wolfson Microelectronics plc |
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95 / 100 page ![]() Production Data WM8953 w PD, January 2009, Rev 4.0 95 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 3 BUFIOEN 0b Enables the VGS / R current generator and the analogue input bias 0 = Disabled 1 = Enabled 2:0 000b Reserved - Do Not Change 15:8 00h Reserved - Do Not Change 7:6 MCDSCTH [1:0] 00b MICBIAS Short Circuit Current Detect Threshold 00 = 600uA 01 = 1200uA 10 = 1800uA 11 = 2400uA These values are for AVDD=3.3V and scale proportionally with AVDD. 5:3 MDCTHR [2:0] 000b MICBIAS Current Detect Threshold 000 = 200uA 001 = 350uA 010 = 500uA 011 = 650uA 100 = 800uA 101 = 950uA 110 = 1100uA 111 = 1200uA These values are for AVDD=3.3V and scale proportionally with AVDD. 2 MCD 0b MICBIAS Current and Short Circuit Detect Enable 0 = disabled 1 = enabled 1 0b Reserved - Do Not Change R58 (3Ah) Microphone Bias 0 MBSEL 0b Microphone Bias Voltage Control 0 = 0.9 * AVDD 1 = 0.65 * AVDD R59 (3Bh) 15:0 0000h Reserved - Do Not Change 15:8 00h Reserved - Do Not Change 7 SDM 0b Enable PLL Integer Mode 0 = Integer mode 1 = Fractional mode 6 PRESCALE 0b Divide MCLK by 2 at PLL input 0 = Divide by 1 1 = Divide by 2 5:4 00b Reserved - Do Not Change R60 (3Ch) PLL (1) 3:0 PLLN [3:0] 8h Integer (N) part of PLL frequency ratio. Use values greater than 5 and less than 13. 15:8 00h Reserved - Do Not Change R61 (3Dh) PLL (2) 7:0 PLLK [15:8] 31h Fractional (K) part of PLL frequency ratio (Most significant bits) 15:8 00h Reserved - Do Not Change R62 (3Eh) PLL (2) 7:0 PLLK [7:0] 26h Fractional (K) part of PLL frequency ratio (Least significant bits) R63 (3Fh) to R116 (74h) Reserved 15:2 0000h Reserved - Do Not Change R117 (75h) Access Control 1 EXT_ACCESS_ENA 0b Extended Register Map Access 0 = disabled 1 = enabled |
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