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データシートサーチシステム |
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ADC32RF83 データシート(PDF) 115 Page - Texas Instruments |
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ADC32RF83 データシート(HTML) 115 Page - Texas Instruments |
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115 / 138 page  115 ADC32RF80, ADC32RF83 www.ti.com SBAS774A – MAY 2016 – REVISED DECEMBER 2016 Product Folder Links: ADC32RF80 ADC32RF83 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated 8.5.13.12 Register 021h (address = 021h), Power Detector Page Figure 240. Register 021h 7 6 5 4 3 2 1 0 0 0 0 PWRDETACCU W-0h W-0h W-0h R/W-0h LEGEND: R/W = Read/Write; W = Write only; -n = value after reset Table 109. Register 021h Field Descriptions Bit Field Type Reset Description 7-5 0 W 0h Must write 0 4-0 PWRDETACCU R/W 0h These bits program the block length to be used for RMS power computation. The block length is defined in terms of fS / 8 clocks and can be programmed as 2M, where M = 0 to 16. 8.5.13.13 Register 022h-025h (address = 022h-025h), Power Detector Page Figure 241. Register 022h 7 6 5 4 3 2 1 0 PWRDETH[7:0] R/W-0h LEGEND: R/W = Read/Write; -n = value after reset Figure 242. Register 023h 7 6 5 4 3 2 1 0 PWRDETH[15:8] R/W-0h LEGEND: R/W = Read/Write; -n = value after reset Figure 243. Register 024h 7 6 5 4 3 2 1 0 PWRDETL[7:0] R/W-0h LEGEND: R/W = Read/Write; -n = value after reset Figure 244. Register 025h 7 6 5 4 3 2 1 0 PWRDETL[15:8] R/W-0h LEGEND: R/W = Read/Write; -n = value after reset Table 110. Register 022h-025h Field Descriptions Bit Field Type Reset Description 7-0 PWRDETH[15:0] PWRDETL[15:0] R/W 0h The computed average power is compared against these high and low thresholds. One LSB of the thresholds represents 1 / 216. Example: if PWRDETH is set to –14 dBFS from peak, (10(–14 / 20))2 × 216 = 2609, then set 5422h, 5423h, 5C22h, 5C23h = 0A31h. |
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