Datasheet

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SX1272/73
WIRELESS, SENSING & TIMING DATASHEET
Rev. 2 - July 2014
©2014 Semtech Corporation
RegIrqFlags
(0x12)
7 RxTimeout rc 0x00
Timeout interrupt: writing a 1 clears the IRQ
6 RxDone rc 0x00
Packet reception complete interrupt: writing a 1 clears the IRQ
5 PayloadCrcError rc 0x00
Payload CRC error interrupt: writing a 1 clears the IRQ
4 ValidHeader rc 0x00
Valid header received in Rx: writing a 1 clears the IRQ
3 TxDone rc 0x00
FIFO Payload transmission complete interrupt: writing a 1 clears
the IRQ
2 CadDone rc 0x00
CAD complete: write to clear: writing a 1 clears the IRQ
1 FhssChangeChannel rc 0x00
FHSS change channel interrupt: writing a 1 clears the IRQ
0 CadDetected rc 0x00
Valid Lora signal detected during CAD operation: writing a 1
clears the IRQ
RegRxNbBytes
(0x13)
7-0 FifoRxBytesNb r n/a Number of payload bytes of latest packet received
RegRxHeaderCnt
ValueMsb
(0x14)
7-0
ValidHeaderCntMsb(15:
8)
rn/a
Number of valid headers received since last transition into Rx
mode, MSB(15:8). Header and packet counters are reseted in
Sleep mode.
RegRxHeaderCnt
ValueLsb
(0x15)
7-0 ValidHeaderCntLsb(7:0) r n/a
Number of valid headers received since last transition into Rx
mode, LSB(7:0). Header and packet counters are reseted in
Sleep mode.
RegRxPacketCntV
alueMsb
(0x16)
7-0
ValidPacketCntMsb(15:
8)
rc n/a
Number of valid packets received since last transition into Rx
mode, MSB(15:8). Header and packet counters are reseted in
Sleep mode.
RegRxPacketCntV
alueLsb
(0x17)
7-0 ValidPacketCntLsb(7:0) r n/a
Number of valid packets received since last transition into Rx
mode, LSB(7:0). Header and packet counters are reseted in
Sleep mode.
RegModemStat
(0x18)
7-5 RxCodingRate r n/a Coding rate of last header received
4
ModemStatus
r ‘1’ Modem clear
3 r ‘0’ Header info valid
2 r ‘0’ RX on-going
1 r ‘0’ Signal synchronized
0 r ‘0’ Signal detected
RegPktSnrValue
(0x19)
7-0
PacketSnr
rn/a
Estimation of SNR on last packet received.In two’s compliment
format mutiplied by 4.
Name
(Address)
Bits
Variable Name
Mode Reset
LoRa
TM
Description
SNR dB[]
PacketSnr twos complement[]
4
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