LLCC68 datasheet(91/111 Pages) SEMTECH

tên linh kiện	LLCC68

Giải thích chi tiết về linh kiện	Long Range, Low Power, sub-GHz RF Transceiver

PDF	111 Pages

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nhà sản xuất	SEMTECH [Semtech Corporation]

Trang chủ	http://www.semtech.com

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91 / 111 page

LLCC68

Data Sheet

Rev. 1.1

DS.LLCC68.W.APP

Dec 2024

91 of 111

Semtech

LLCC68

www.semtech.com

13.4.6.2 LoRa Packet Parameters

The tables below provide more details on the LoRa packet parameters:

The preamble length is a 16-bit value which represents the number of LoRa symbols which are sent by the radio.

When the byte HeaderType is at 0x00, the payload length, coding rate and the header CRC are added to the LoRa header and transported

to the receiver.

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)

Table 13-68: LoRa PacketParam4 - PayloadLength

Payloadlength

Description

0x00 to 0xFF

Size of the payload (in bytes) to transmit or maximum size of the payload that the receiver can accept.

Table 13-69: LoRa PacketParam5 - CRCType

CRCType

Description

0x00

CRC OFF

0x01

CRC ON

Table 13-70: LoRa PacketParam6 - InvertIQ

AddrComp

Description

0x00

Standard IQ setup

0x01

Inverted IQ setup

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