RFM69CW-868S2 datasheet(5/78 Pages) HOPE

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Page 5

RFM69CW

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Index of Figures

Page

Figure 1. Block Diagram ................................................................................................................................................ 8

Figure 2. Pin Diagram .................................................................................................................................................... 9

Figure 3. Marking Diagram ............................................................................................................................................ 9

Figure 4.

........................................................................................................................................ 16

Figure 5. Transmitter Block Diagram ........................................................................................................................... 19

Figure 6. Output Power Curves ................................................................................................................................... 22

Figure 7. Receiver Block Diagram ............................................................................................................................... 23

Figure 8. AGC Thresholds Settings ............................................................................................................................. 24

Figure 9. RSSI Dynamic Curve .................................................................................................................................... 28

Figure 10. Cordic Extraction ........................................................................................................................................ 28

Figure 11. OOK Peak Demodulator Description .......................................................................................................... 29

Figure 12. Floor Threshold Optimization ..................................................................................................................... 30

Figure 13. Bit Synchronizer Description ...................................................................................................................... 31

Figure 14. FEI Process ................................................................................................................................................ 32

Figure 15. Optimized AFC (AfcLowBetaOn=1) ............................................................................................................ 33

Figure 16. Temperature Sensor Response ................................................................................................................. 34

Figure 17. Tx Startup, FSK and OOK .......................................................................................................................... 36

Figure 18. Rx Startup - No AGC, no AFC .................................................................................................................... 37

Figure 19. Rx Startup - AGC, no AFC ......................................................................................................................... 37

Figure 20. Rx Startup - AGC and AFC ........................................................................................................................ 37

Figure 21. Listen Mode Sequence (no wanted signal is received) .............................................................................. 39

Figure 22. Listen Mode Sequence (wanted signal is received) ................................................................................... 41

Figure 23. Auto Modes of Packet Handler ................................................................................................................... 42

Figure 24. RFM69CW Data Processing Conceptual View ............................................................................................43

Figure 25. SPI Timing Diagram (single access) .......................................................................................................... 44

Figure 26. FIFO and Shift Register (SR) ..................................................................................................................... 45

Figure 27. FifoLevel IRQ Source Behavior .................................................................................................................. 46

Figure 28. Sync Word Recognition .............................................................................................................................. 47

Figure 29. Continuous Mode Conceptual View ........................................................................................................... 49

Figure 30. Tx Processing in Continuous Mode ............................................................................................................ 49

Figure 31. Rx Processing in Continuous Mode ........................................................................................................... 50

Figure 32. Packet Mode Conceptual View ................................................................................................................... 51

Figure 33. Fixed Length Packet Format ...................................................................................................................... 52

Figure 34. Variable Length Packet Format .................................................................................................................. 52

Figure 35. Unlimited Length Packet Format ................................................................................................................ 53

Figure 36. CRC Implementation .................................................................................................................................. 58

Figure 37. Manchester Encoding/Decoding ................................................................................................................. 58

Figure 38. Data Whitening ........................................................................................................................................... 59

Figure 39. POR Timing Diagram ................................................................................................................................. 75

Figure 40. Manual Reset Timing Diagram ................................................................................................................... 76

Figure 41. +13dBm Schematic .................................................................................................................................... 76

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