SX1231-31SKB868-EVAL Semtech, SX1231-31SKB868-EVAL Datasheet - Page 3

• Manufacturer Part Number: SX1231-31SKB868-EVAL
• Description: development tool usb kit for sx1231 transceiver...
• Manufacturer: Semtech

4.
5.
Rev 4 - Nov 2010
ADVANCED COMMUNICATIONS & SENSING
4.1.
4.2.
4.3.
4.4.
5.1.
5.2.
5.3.
5.4.
5.5.
Operating Modes .................................................................................................................................................. 35
Data Processing.................................................................................................................................................... 43
3.5.9. RSSI ......................................................................................................................................................... 27
3.5.10. Cordic ......................................................................................................................................................28
3.5.11. FSK Demodulator ....................................................................................................................................29
3.5.12. OOK Demodulator .................................................................................................................................. 29
3.5.13. Bit Synchronizer ..................................................................................................................................... 31
3.5.14. Frequency Error Indicator....................................................................................................................... 31
3.5.15. Automatic Frequency Correction ............................................................................................................ 32
3.5.16. Optimized Setup for Low Modulation Index Systems ............................................................................. 33
3.5.17. Temperature Sensor ...............................................................................................................................34
3.5.18. Timeout Function.................................................................................................................................... 34
4.2.1. Transmitter Startup Time ...........................................................................................................................36
4.2.2. Tx Start Procedure ................................................................................................................................... 36
4.2.3. Receiver Startup Time.............................................................................................................................. 36
4.2.4. Rx Start Procedure ................................................................................................................................... 38
4.2.5. Optimized Frequency Hopping Sequences .............................................................................................. 38
4.3.1. Timings ..................................................................................................................................................... 39
4.3.2. Criteria ...................................................................................................................................................... 40
4.3.3. End of Cycle Actions ................................................................................................................................ 40
4.3.4. RC Timer Accuracy .................................................................................................................................. 41
5.1.1. Block Diagram .......................................................................................................................................... 43
5.1.2. Data Operation Modes ............................................................................................................................. 43
5.2.1. SPI Interface............................................................................................................................................. 44
5.2.2. FIFO ......................................................................................................................................................... 45
5.2.3. Sync Word Recognition ............................................................................................................................ 46
5.2.4. Packet Handler ......................................................................................................................................... 47
5.2.5. Control ...................................................................................................................................................... 47
5.3.1. DIO Pins Mapping in Continuous Mode ................................................................................................... 48
5.3.2. DIO Pins Mapping in Packet Mode .......................................................................................................... 48
5.4.1. General Description.................................................................................................................................. 49
5.4.2. Tx Processing........................................................................................................................................... 49
5.4.3. Rx Processing .......................................................................................................................................... 50
Basic Modes.................................................................................................................................................. 35
Automatic Sequencer and Wake-Up Times .................................................................................................. 35
Listen Mode ................................................................................................................................................... 39
AutoModes .................................................................................................................................................... 42
Overview ....................................................................................................................................................... 43
Control Block Description.............................................................................................................................. 44
Digital IO Pins Mapping................................................................................................................................. 47
Continuous Mode .......................................................................................................................................... 49
Packet Mode ................................................................................................................................................. 50
Page 3
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SX1231