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RFM98 Datasheet(PDF) 33 Page - HOPE Microelectronics CO., Ltd.

Part # RFM98
Description  Low Power Long Range Transceiver Module
PDF  121 Pages
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Manufacturer  HOPE [HOPE Microelectronics CO., Ltd.]
Direct Link  https://www.hoperf.com/
Logo HOPE - HOPE Microelectronics CO., Ltd.

RFM98 Datasheet(HTML) 33 Page - HOPE Microelectronics CO., Ltd.

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Page 33
RFM95/96/97/98(W)
Tel: + 86-755-82973805
Fax: + 86-755-82973550
E-mail: sales@hoperf.com http:/ / www.hoperf.com
WIRELESS & SENSING
PRELIMINARY
DATASHEET
4.1.5. LoRa
TM
  Modem State Machine Sequences
The sequence for transmission and reception of data to and from the LoRaTM  modem, together with flow charts of typical
sequences of operation, are detailed below.
Data Transmission Sequence
In transmit mode power consumption is optimized by enabling RF, PLL and PA blocks only when packet data needs to be
transmitted. Figure 8 shows a typical LoRaTM transmit sequence.
Figure 8. LoRa
TM
 
modulation transmission sequence.
Static configuration registers can only be accessed in Sleep mode, Stand-by mode or FSTX mode.
The LoRaTM FIFO can only be filled in Stand-by mode.
Data transmission is initiated by sending TX mode request.
Upon completion the TxDone interrupt is issued and the radio returns to Stand-by mode.
Following transmission the radio can be manually placed in Sleep mode or the FIFO refilled for a subsequent Tx
operation.



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