CS5480 datasheet(4/70 Pages) CIRRUS

4 / 70 page

CS5480

DS980F3

LIST OF FIGURES

Figure 1. Oscillator Connections................................................................................................... 7

Figure 2. Multi-device UART Connections.................................................................................... 8

Figure 3. UART Serial Frame Format........................................................................................... 8

Figure 4. Active Energy Load Performance.................................................................................. 9

Figure 5. Reactive Energy Load Performance............................................................................ 10

Figure 6. IRMS Load Performance ............................................................................................. 10

Figure 7. SPI Data and Clock Timing ......................................................................................... 15

Figure 8. Multi-device UART Timing........................................................................................... 15

Figure 9. Signal Flow for V1, I1, P1, Q1 Measurements ............................................................ 17

Figure 10. Signal Flow for V2, I2, P2, and Q2 Measurements ................................................... 17

Figure 11. Low-rate Calculations ................................................................................................18

Figure 12. Power-on Reset Timing ............................................................................................. 21

Figure 13. Zero-crossing Level and Zero-crossing Output on DOx ............................................ 22

Figure 14. Channel Selection and Tamper Protection Flow ....................................................... 23

Figure 15. Automatic Channel Selection .................................................................................... 24

Figure 16. Energy Pulse Generation and Digital Output Control ................................................ 25

Figure 17. Sag, Swell, and Overcurrent Detect .......................................................................... 26

Figure 18. Phase Sequence A, B, C for Rising Edge Transition ................................................ 27

Figure 19. Phase Sequence C, B, A for Rising Edge Transition ................................................ 28

Figure 20. Byte Sequence for Page Select................................................................................. 29

Figure 21. Byte Sequence for Register Read ............................................................................. 29

Figure 22. Byte Sequence for Register Write ............................................................................. 29

Figure 23. Byte Sequence for Instructions.................................................................................. 29

Figure 24. Byte Sequence for Checksum ................................................................................... 30

Figure 25. Calibration Data Flow ................................................................................................63

Figure 26. T Register vs. Force Temp ........................................................................................ 65

Figure 27. Typical Single-phase 3-Wire Connection .................................................................. 66

Figure 28. Typical Single-phase 2-Wire Connection .................................................................. 67

LIST OF TABLES

Table 1. POR Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 2. Meter Configuration Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 3. Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 4. Instruction Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

CS5480 数据表(PDF) 4 Page - Cirrus Logic

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