RFM92 Datasheet, PDF (4/126 Pages) List of Unclassifed Manufacturers – Low Power Long Range Transceiver Module

RFM92W/93W V3.0
Table of contents
Section
Page
4.2.14.1. General Description ........................................................................................................................ 67
4.2.14.2. Packet Format ................................................................................................................................. 68
4.2.14.3. Tx Processing ................................................................................................................................. 71
4.2.14.4. Rx Processing ................................................................................................................................. 71
4.2.14.5. Handling Large Packets .................................................................................................................. 72
4.2.14.6. Packet Filtering ............................................................................................................................... 72
4.2.14.7. DC-Free Data Mechanisms............................................................................................................. 74
4.2.14.8. Beacon Tx Mode ............................................................................................................................. 75
4.2.15. io-homecontrol® Compatibility Mode ...................................................................................................... 75
4.3. SPI Interface ................................................................................................................................................76
5. RFM92W/93W Analog & RF Frontend Electronics................................................................................................. 78
5.1. Power Supply Strategy .................................................................................................................................. 78
5.2. Low Battery Detector ..................................................................................................................................... 78
5.3. Frequency Synthesis ..................................................................................................................................... 78
5.3.1. Crystal Oscillator ....................................................................................................................................... 78
5.3.2. CLKOUT Output ........................................................................................................................................ 79
5.3.3. PLL ............................................................................................................................................................ 79
5.3.4. RC Oscillator ............................................................................................................................................. 81
5.4. Transmitter Description ................................................................................................................................82
5.4.1. Architecture Description ............................................................................................................................ 82
5.4.2. RF Power Amplifiers.................................................................................................................................. 82
5.4.3. High Power +20 dBm Operation ............................................................................................................... 83
5.4.4. Over Current Protection .........................................................................................................................84
5.5. Receiver Description ...................................................................................................................................... 84
5.5.1. Overview ................................................................................................................................................... 84
5.5.2. Receiver Enabled and Receiver Active States.......................................................................................... 84
5.5.3. Automatic Gain Control In FSK/OOK Mode .............................................................................................. 85
5.5.4. RSSI in FSK/OOK Mode ........................................................................................................................... 86
5.5.5. RSSI in LoRa^TM Mode .............................................................................................................................. 87
5.5.6. Channel Filter ............................................................................................................................................ 87
5.5.7. Temperature Measurement....................................................................................................................... 88
6. Description of the Registers................................................................................................................................... 89
6.1. Register Table Summary ............................................................................................................................... 89
6.2. FSK/OOK Mode Register Map ....................................................................................................................92
6.3. LoRa^TM Mode Register Map ........................................................................................................................ 106
7. Application Information ........................................................................................................................................ 112
7.1. Crystal Resonator Specification ................................................................................................................... 112
7.2. Reset of the Chip ......................................................................................................................................... 112
7.2.1. POR......................................................................................................................................................... 112
7.2.2. Manual Reset .......................................................................................................................................113
7.3. Top Sequencer: Listen Mode Examples ...................................................................................................... 113
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