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CS5464 Datasheet(PDF) 29 Page - Cirrus Logic |
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CS5464 Datasheet(HTML) 29 Page - Cirrus Logic |
29 / 46 page CS5464 DS682F3 29 8.2.2 Instantaneous Current (I1, I2), Voltage (V1, V2), and Power (P1, P2) Address: 1 (I1), 2 (V1), 3 (P2), 7 (I2), 8 (V2), 9 (P2) I1 (I2) and V1 (V2) contain instantaneous current and voltage, respectively, which are multiplied to yield in- stantaneous power, P1 (P2). These are two's complement values in the range of -1.0 value 1.0, with the binary point to the right of the MSB. 8.2.3 Active Power (P1AVG , P2AVG ) Address: 4 (P1AVG), 10 (P2AVG) Instantaneous power is averaged over each low-rate interval (N samples) to compute active power, P1AVG (P2AVG). These are two's complement values in the range of -1.0 value 1.0, with the binary point to the right of the MSB. 8.2.4 RMS Current (I1RMS, I2RMS ) and Voltage (V1RMS, V2RMS ) Address: 5 (I1RMS), 6 (V1RMS), 11 (I2RMS), 12 (V2RMS) I1RMS (I2RMS) and V1RMS (V2RMS) contain the root mean square (RMS) values of I1 (I2) and V1 (V2), calcu- lated each low-rate interval. These are unsigned values in the range of 0 value 1.0, with the binary point to the left of the MSB. 8.2.5 Instantaneous Quadrature Power (Q1, Q2) Address: 14 (Q1), 17 (Q2) Instantaneous quadrature power, Q1 (Q2), the product of voltage1 (voltage2) shifted 90 degrees and current1 (current2). These are two's complement values in the range of -1.0 value 1.0, with the binary point to the right of the MSB. 8.2.6 Reactive Power (Q1AVG, Q2AVG ) Address: 13 (Q1AVG), 16 (Q2AVG) Reactive power Q1AVG (Q2AVG) is Q1 (Q2) averaged over every N samples. These are two's complement values in the range of -1.0 value 1.0, with the binary point to the right of the MSB. MSB LSB -(20)2-1 2-2 2-3 2-4 2-5 2-6 2-7 ..... 2-17 2-18 2-19 2-20 2-21 2-22 2-23 MSB LSB -(20)2-1 2-2 2-3 2-4 2-5 2-6 2-7 ..... 2-17 2-18 2-19 2-20 2-21 2-22 2-23 MSB LSB 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 ..... 2-18 2-19 2-20 2-21 2-22 2-23 2-24 MSB LSB -(20)2-1 2-2 2-3 2-4 2-5 2-6 2-7 ..... 2-17 2-18 2-19 2-20 2-21 2-22 2-23 MSB LSB -(20)2-1 2-2 2-3 2-4 2-5 2-6 2-7 ..... 2-17 2-18 2-19 2-20 2-21 2-22 2-23 |
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