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MSC1210 Datasheet(PDF) 71 Page - Texas Instruments |
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MSC1210 Datasheet(HTML) 71 Page - Texas Instruments |
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71 / 83 page ![]() MSC1210 SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004 www.ti.com 71 ADC Control Register 1 (ADCON1) 7 6 5 4 3 2 1 0 Reset Value SFR DDh OF_UF POL SM1 SM0 — CAL2 CAL1 CAL0 0000 0000b OF_UF Overflow/Underflow. If this bit is set, the data in the summation register is invalid. Either an overflow or underflow bit 7 occurred. The bit is cleared by writing a ‘0’ to it. POL Polarity. Polarity of the ADC result and Summation register. bit 6 0 = Bipolar. 1 = Unipolar. The LSB size is 1/2 the size of bipolar (twice the resolution). POL ANALOG INPUT DIGITAL OUTPUT +FSR 0x7FFFFF 0 ZERO 0x000000 0 −FSR 0x800000 +FSR 0xFFFFFF 1 ZERO 0x000000 1 −FSR 0x000000 SM1−0 Settling Mode. Selects the type of filter or auto select which defines the digital filter settling characteristics. bits 5−4 SM1 SM0 SETTLING MODE 0 0 Auto 0 1 Fast Settling Filter 1 0 Sinc2 Filter 1 1 Sinc3 Filter CAL2−0 Calibration Mode Control Bits. bits 2−0 CAL2 CAL1 CAL0 CALIBRATION MODE 0 0 0 No Calibration (default) 0 0 1 Self-Calibration, Offset and Gain 0 1 0 Self-Calibration, Offset only 0 1 1 Self-Calibration, Gain only 1 0 0 System Calibration, Offset only (requires external connection) 1 0 1 System Calibration, Gain only (requires external connection) 1 1 0 Reserved 1 1 1 Reserved NOTE: Read Value—000b. ADC Control Register 2 (ADCON2) 7 6 5 4 3 2 1 0 Reset Value SFR DEh DR7 DR6 DR5 DR4 DR3 DR2 DR1 DR0 1Bh DR7−0 Decimation Ratio LSB. bits 7−0 ADC Control Register 3 (ADCON3) 7 6 5 4 3 2 1 0 Reset Value SFR DDh — — — — — DR10 DR9 DR8 06h DR10−8 Decimation Ratio Most Significant 3 Bits. The output data rate = (ACLK + 1)/64/Decimation Ratio. bits 2−0 |
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