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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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CRD5376 Scheda tecnica(PDF) 38 Page - Cirrus Logic |
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CRD5376 Scheda tecnica(HTML) 38 Page - Cirrus Logic |
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38 / 68 page  CRD5376 38 DS612RD1 3.3.5 Gain/Offset The Gain / Offset sub-panel controls the digital filter GAIN and OFFSET registers for each channel. The OFFSET and GAIN registers can be manually written with any 24-bit 2’s complement value from 0x800000 to 0x7FFFFF. The USEGR, USEOR, ORCAL, and EXP[4:0] values enable gain correction, off- set correction, and offset calibration in the digital filter. The offset calibration routine built into the digital filter is enabled by writing the ORCAL and EXP[4:0] bits. The EXP[4:0] value can range from 0x00 to 0x18 and represents an exponential shift of the calibration feedback, as described in the digital filter data sheet. Offset calibration results are automatically written to the OFFSET registers and remain there, even after offset calibration is disabled. Control Description Gain Displays the digital filter GAIN1 to GAIN4 registers. Offset Displays the digital filter OFFSET1 to OFFSET4 registers. Read Reads values from the GAIN and OFFSET registers. Write Writes values to the GAIN and OFFSET registers. USEGR Enables gain correction. When enabled, output samples are gained down by the value in the GAIN register.(Output = GAIN / 0x7FFFFF). USEOR Enables offset correction. When enabled, output samples are offset by the value in the OFFSET register. (Output = Sample - OFFSET). ORCAL Enables offset calibration using the exponent value from the EXP[4:0] control. Results are automatically written to the OFFSET registers as they are calculated. EXP[4:0] Sets the exponential value used by offset calibration. |
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