LLCC68 datasheet(92/106 Pages) SEMTECH

92 / 106 page

LLCC68

Data Sheet

Rev. 1.0

DS.LLCC68.W.APP

July 2019

92 of 106

Semtech

www.semtech.com

13.5.4 GetRssiInst

This command returns the instantaneous RSSI value during reception of the packet. The command is valid for all protocols.

13.5.5 GetStats

This command returns the number of informations received on a few last packets. The command is valid for all protocols.

13.5.6 ResetStats

This command resets the value read by the command GetStats. To execute this command, the opCode is 0x00 followed by

6 zeros (so 7 zeros in total).

SnrPkt

LoRa®

Estimation of SNR on last packet received in two’s compliment format multiplied by 4.

Actual SNR in dB =SnrPkt/4

SignalRssiPkt

LoRa®

Estimation of RSSI of the

LoRa® signal (after despreading) on last packet received.

Actual Rssi in dB = -SignalRssiPkt/2

Table 13-81: GetRssiInst SPI Transaction

Byte

Data from host

Opcode = 0x15

NOP

Data to host

RFU

Status

RssiInst

Signal power in dBm = –RssiInst/2 (dBm)

Table 13-82: GetStats SPI Transaction

Byte

2-3

4-5

6-7

Data from host

Opcode =

0x10

NOP

Data to host in GFSK

packet type

RFU

Status

NbPktReceived(15:0)

NbPktCrcError(15:0)

NbPktLengthError(15:0)

Data to host in LoRa®

packet type

RFU

Status

NbPktReceived(15:0)

NbPktCrcError(15:0)

NbPktHeaderErr(15:0)

Table 13-83: ResetStats SPI Transaction

Byte

1-6

Data from host

opCode = 0x00

0x00

Table 13-80: Status Fields

RSSI

Description

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