LLCC68 datasheet(93/111 Pages) SEMTECH

93 / 111 page

LLCC68

Data Sheet

Rev. 1.1

DS.LLCC68.W.APP

Dec 2024

93 of 111

Semtech

LLCC68

www.semtech.com

13.4.8 SetBufferBaseAddress

This command sets the base addresses in the data buffer, in all modes of operation, for the packet handing operation in TX and RX modes.

The usage and definition of these parameters are described in the relevant packet type sections.

13.4.9 SetLoRaSymbNumTimeout

This command sets the number of symbols used by the modem to validate a successful reception.

In LoRa mode, when going into Rx, the modem locks as soon as a LoRa symbol has been detected which may lead to false detection. This

phenomena is quite rare but nevertheless possible. To avoid this, the command SetLoRaSymbNumTimeout can be used to define the

number of symbols which are used to validate the correct reception of a packet.

SymbNum valid values are even numbers up to 64, then intervals of 8 up to 248.

• When SymbNum is 0, the modem validates the reception as soon as a LoRa Symbol has been detected.

• When SymbNum is not 0, the modem waits for a total of SymbNum LoRa symbols to validate, or not, the correct detection of a LoRa

packet. If the various states of the demodulator are not locked at this moment, the radio generates an RxTimeout IRQ.

Table 13-74: SetBufferBaseAddress SPI Transaction

Byte

Data from host

Opcode = 0x8F

TX base address

RX base address

Table 13-75: SetLoRaSymbNumTimeout SPI Transaction

Byte

Data from host

Opcode = 0xA0

SymbNum

LLCC68 데이터시트(PDF) 93 Page - Semtech Corporation