Cirrus Logic CS5480 - Manual (Page 4)

CS5480
4 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