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WM8593 데이터시트(PDF) 40 Page - Wolfson Microelectronics plc |
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WM8593 데이터시트(HTML) 40 Page - Wolfson Microelectronics plc |
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40 / 98 page ![]() WM8593 Product Preview w PP Rev 1.0 January 2007 40 ADC INPUT SELECTOR CONTROL The ADC input switch can be configured to allow any combination of two inputs to be input to the ADC. Each input switch channel can be controlled independently. The input switch also includes PGAs to provide a range of analogue gain settings between 0dB and +12dB prior to the ADC. These PGAs can be enabled and disabled independently. Figure 20 ADC Input Selector Control REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 3:0 ADCL_ SEL[3:0] 0000 7:4 ADCR_ SEL[4:0] 0000 ADC Input Select 0000 = VIN1L 0001 = VIN2L 0010 = VIN3L 0011 = VIN4L 0100 = VIN5L 0101 = VIN6L 0110 = VIN7L 0111 = VIN8L 1000 = VIN1R 1001 = VIN2R 1010 = VIN3R 1011 = VIN4R 1100 = VIN5R 1101 = VIN6R 1110 = VIN7R 1111 = VIN8R 9:8 ADC_AMP _VOL[1:0] 10 ADC Amplifier Gain Control 00 = 0dB 01 = +3dB 10 = +6dB 11 = +12dB R30 INPUT_CTRL3 1Eh 10 ADC_ SWITCH_ EN 0 ADC Input Switch Control 0 = ADC input switches open 1 = ADC input switches closed |
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