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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LLCC68 데이터시트(PDF) 86 Page - Semtech Corporation |
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LLCC68 데이터시트(HTML) 86 Page - Semtech Corporation |
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86 / 106 page  LLCC68 Data Sheet Rev. 1.0 DS.LLCC68.W.APP July 2019 86 of 106 Semtech www.semtech.com 13.4.6.2 LoRa® Packet Parameters The tables below provide more details on the LoRa® packets parameters: The preamble length is a 16-bit value which represents the number of LoRa® symbols which will be sent by the radio. Table 13-63: CRC Polynomial Programming Register Address Default Value CRC MSB polynomial value [15:8] 0x06BE 0x10 CRC LSB polynomial value [7:0] 0x06BF 0x21 Table 13-64: GFSK PacketParam9 - Whitening AddrComp Description 0x00 No encoding 0x01 Whitening enable Table 13-65: Whitening Initial Value Whitening initial value Register Address Default Value Whitening initial value MSB 0x06B8 0x01 Whitening initial value LSB 0x06B9 0x00 Table 13-66: LoRa® PacketParam1 & PacketParam2 - PreambleLength PreambleLength (15:0) Description 0x0001 to 0xFFFF preamble length: number of symbols sent as preamble Table 13-67: LoRa® PacketParam3 - HeaderType HeaderType Description 0x00 Variable length packet (explicit header) 0x01 Fixed length packet (implicit header) |
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