SX1233 Просмотр технического описания (PDF) - Semtech Corporation

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SX1233

High Bit Rate Transceiver Low Power Integrated UHF Transceiver

Semtech Corporation 

SX1233

ADVANCED COMMUNICATIONS & SENSING

Table of contents

Section

DATASHEET

Page

Index of Figures

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

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

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

Figure 4. TCXO Connection .........................................................................................................................................16

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

Figure 6. Receiver Block Diagram ................................................................................................................................23

Figure 7. AGC Thresholds Settings ..............................................................................................................................24

Figure 8. Cordic Extraction ...........................................................................................................................................28

Figure 9. OOK Peak Demodulator Description .............................................................................................................28

Figure 10. Floor Threshold Optimization ......................................................................................................................29

Figure 11. Bit Synchronizer Description .......................................................................................................................30

Figure 12. FEI Process .................................................................................................................................................31

Figure 13. Optimized AFC (AfcLowBetaOn=1) ............................................................................................................32

Figure 14. Temperature Sensor Response ..................................................................................................................33

Figure 15. Tx Startup, FSK and OOK ...........................................................................................................................36

Figure 16. Rx Startup - No AGC, no AFC .....................................................................................................................37

Figure 17. Rx Startup - AGC, no AFC ..........................................................................................................................37

Figure 18. Rx Startup - AGC and AFC .........................................................................................................................37

Figure 19. Listen Mode Sequence (no wanted signal is received) ...............................................................................39

Figure 20. Listen Mode Sequence (wanted signal is received) ....................................................................................41

Figure 21. Auto Modes of Packet Handler ....................................................................................................................42

Figure 22. SX1233 Data Processing Conceptual View ................................................................................................43

Figure 23. SPI Timing Diagram (single access) ...........................................................................................................44

Figure 24. FIFO and Shift Register (SR) ......................................................................................................................45

Figure 25. FifoLevel IRQ Source Behavior ...................................................................................................................46

Figure 26. Sync Word Recognition ...............................................................................................................................47

Figure 27. Continuous Mode Conceptual View ............................................................................................................49

Figure 28. Tx Processing in Continuous Mode .............................................................................................................49

Figure 29. Rx Processing in Continuous Mode ............................................................................................................50

Figure 30. Packet Mode Conceptual View ...................................................................................................................51

Figure 31. Fixed Length Packet Format .......................................................................................................................52

Figure 32. Variable Length Packet Format ...................................................................................................................52

Figure 33. Unlimited Length Packet Format .................................................................................................................53

Figure 34. CRC Implementation ...................................................................................................................................58

Figure 35. Manchester Encoding/Decoding .................................................................................................................58

Figure 36. Data Whitening ............................................................................................................................................59

Figure 37. POR Timing Diagram ..................................................................................................................................75

Figure 38. Manual Reset Timing Diagram ....................................................................................................................76

Rev 3.April 2010

Page 5

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