LLCC68 datasheet(79/111 Pages) SEMTECH

79 / 111 page

LLCC68

Data Sheet

Rev. 1.1

DS.LLCC68.W.APP

Dec 2024

79 of 111

Semtech

LLCC68

www.semtech.com

13.3.3 GetIrqStatus

This command returns the value of the IRQ register.

13.3.4 ClearIrqStatus

This command clears an IRQ flag in the IRQ register.

This function clears an IRQ flag in the IRQ register by setting to 1 the bit of ClearIrqParam corresponding to the same position as the IRQ

flag to be cleared. As an example, if bit 0 of ClearIrqParam is set to 1 then IRQ flag at bit 0 of IRQ register is cleared.

If a DIO is mapped to one single IRQ source, the DIO is cleared if the corresponding bit in the IRQ register is cleared. If DIO is set to 0 with

several IRQ sources, then the DIO remains set to one until all bits mapped to the DIO in the IRQ register are cleared.

Table 13-29: IRQ Registers

Bit

IRQ

Description

Modulation

TxDone

Packet transmission completed

All

RxDone

Packet received

All

PreambleDetected

Preamble detected

All

SyncWordValid

Valid sync word detected

FSK

HeaderValid

Valid LoRa header received

LoRa

HeaderErr

LoRa header CRC error

LoRa

CrcErr

Wrong CRC received

All

CadDone

Channel activity detection finished

LoRa

CadDetected

Channel activity detected

LoRa

Timeout

Rx or Tx timeout

All

10-13

RFU

Table 13-30: GetIrqStatus SPI Transaction

Byte

2-3

Data from host

Opcode = 0x12

NOP

Data to host

RFU

Status

IrqStatus(15:0)

Table 13-31: ClearIrqStatus SPI Transaction

Byte

1-2

Data from host

Opcode = 0x02

ClearIrqParam(15:0)

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