SX1236IMLTRT datasheet(6/96 Pages) SEMTECH

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Page

Table of contents

SX1236

WIRELESS & SENSING

DATASHEET

Rev. 1. - December 2013

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

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

Figure 3. Marking Diagram ...........................................................................................................................................11

Figure 4. SX1236 Block Schematic Diagram ...............................................................................................................19

Figure 5. OOK Peak Demodulator Description .............................................................................................................23

Figure 6. Floor Threshold Optimization ........................................................................................................................24

Figure 7. Bit Synchronizer Description .........................................................................................................................25

Figure 8. Startup Process .............................................................................................................................................29

Figure 9. Time to RSSI Sample ....................................................................................................................................30

Figure 10. Tx to Rx Turnaround ...................................................................................................................................31

Figure 11. Rx to Tx Turnaround ...................................................................................................................................31

Figure 12. Receiver Hopping ........................................................................................................................................32

Figure 13. Transmitter Hopping ....................................................................................................................................32

Figure 14. Timer1 and Timer2 Mechanism ...................................................................................................................36

Figure 15. Sequencer State Machine ...........................................................................................................................38

Figure 16. SX1236 Data Processing Conceptual View ................................................................................................39

Figure 17. FIFO and Shift Register (SR) ......................................................................................................................40

Figure 18. FifoLevel IRQ Source Behavior ...................................................................................................................41

Figure 19. Sync Word Recognition ...............................................................................................................................42

Figure 20. Continuous Mode Conceptual View ............................................................................................................44

Figure 21. Tx Processing in Continuous Mode .............................................................................................................44

Figure 22. Rx Processing in Continuous Mode ............................................................................................................45

Figure 23. Packet Mode Conceptual View ...................................................................................................................46

Figure 24. Fixed Length Packet Format .......................................................................................................................47

Figure 25. Variable Length Packet Format ...................................................................................................................48

Figure 26. Unlimited Length Packet Format .................................................................................................................48

Figure 27. Manchester Encoding/Decoding .................................................................................................................52

Figure 28. Data Whitening Polynomial .........................................................................................................................53

Figure 29. SPI Timing Diagram (single access) ...........................................................................................................54

Figure 30. TCXO Connection .......................................................................................................................................55

Figure 31. RF Front-end Architecture Shows the Internal PA Configuration. ...............................................................57

Figure 32. Temperature Sensor Response ..................................................................................................................62

Figure 33. POR Timing Diagram ..................................................................................................................................80

Figure 34. Manual Reset Timing Diagram ....................................................................................................................81

Figure 35. Listen Mode: Principle .................................................................................................................................81

Figure 36. Listen Mode with No Preamble Received ...................................................................................................82

Figure 37. Listen Mode with Preamble Received .........................................................................................................82

Figure 38. Wake On PreambleDetect State Machine ...................................................................................................83

Figure 39. Listen Mode with no SyncAddress Detected ...............................................................................................84

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