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TMP512 датащи(PDF) 43 Page - Texas Instruments |
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TMP512 датащи(HTML) 43 Page - Texas Instruments |
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43 / 62 page ![]() Power= Current BusVoltage ´ 5000 Current= ShuntVoltage CalibrationRegister ´ 4096 TMP512 TMP513 www.ti.com SBOS491A – JUNE 2010 – REVISED MAY 2011 Bus Voltage Register 05h (Read-Only) The Bus Voltage Register stores the most recent bus voltage reading, VBUS. At full-scale range = 32V (decimal = 8000, hex = 1F40), and LSB = 4mV. BIT # D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 BIT BD12 BD11 BD10 BD9 BD8 BD7 BD6 BD5 BD4 BD3 BD2 BD1 BD0 — — — NAME POR 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 VALUE At full-scale range = 16V (decimal = 4000, hex = 0FA0), and LSB = 4mV. BIT # D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 BIT 0 BD11 BD10 BD9 BD8 BD7 BD6 BD5 BD4 BD3 BD2 BD1 BD0 — — — NAME POR 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 VALUE Power Register 06h (Read-Only) Full-scale range and LSB are set by the Calibration Register. See the Programming the TMP512/13 Power Measurement Engine section. BIT # D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 BIT PD15 PD14 PD13 PD12 PD11 PD10 PD9 PD8 PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0 NAME POR 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 VALUE The Power Register records power in watts by multiplying the values of the current with the value of the bus voltage according to the equation: Current Register 07h (Read-Only) Full-scale range and LSB depend on the value entered in the Calibration Register. See the Programming the TMP512/13 Power Measurement Engine section. Negative values are stored in twos complement format. BIT # D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 BIT CSIGN CD14 CD13 CD12 CD11 CD10 CD9 CD8 CD7 CD6 CD5 CD4 CD3 CD2 CD1 CD0 NAME POR 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 VALUE The value of the Current Register is calculated by multiplying the value in the Shunt Voltage Register with the value in the Calibration Register according to the equation: Copyright © 2010–2011, Texas Instruments Incorporated 43 |
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