sx1231h Semtech Corporation, sx1231h Datasheet - Page 3

• Manufacturer Part Number: sx1231h
• Description: Low Power Integrated Uhf Transceiver With On-chip +20dbm Pa
• Manufacturer: Semtech Corporation

4.
5.
Rev 1 - Oct 2011
ADVANCED COMMUNICATIONS & SENSING
4.1.
4.2.
4.3.
4.4.
5.1.
5.2.
5.3.
5.4.
Operating Modes .................................................................................................................................................. 35
Data Processing.................................................................................................................................................... 43
3.4.8. Complex Filter - OOK ............................................................................................................................... 27
3.4.9. RSSI ......................................................................................................................................................... 27
3.4.10. Cordic ..................................................................................................................................................... 28
3.4.11. FSK Demodulator ....................................................................................................................................29
3.4.12. OOK Demodulator .................................................................................................................................. 29
3.4.13. Bit Synchronizer ..................................................................................................................................... 31
3.4.14. Frequency Error Indicator....................................................................................................................... 31
3.4.15. Automatic Frequency Correction ............................................................................................................ 32
3.4.16. Optimized Setup for Low Modulation Index Systems ............................................................................. 33
3.4.17. Temperature Sensor ............................................................................................................................... 34
3.4.18. 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. Stopping Listen Mode............................................................................................................................... 41
4.3.5. 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
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
Page 3
SX1231H
DATASHEET
www.semtech.com