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RFM95 Datasheet(PDF) 74 Page - HOPE Microelectronics CO., Ltd.

Part No. RFM95
Description  Low Power Long Range Transceiver Module
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Maker  HOPE [HOPE Microelectronics CO., Ltd.]
Homepage  https://www.hoperf.com/
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 74 page
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Page 74
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
LFS R P o ly nom ia l =X 9 + X 5 + 1
X 8
X 7
X 6
X 5
X 4
X 3
X 2
X 1
X 0
Tra n s m it d a ta
W h ite n ed da ta
Figure 37. Data Whitening Polynomial
4.2.13.8. Beacon Tx Mode
In some short range wireless network topologies a repetitive message, also known as beacon, is transmitted periodically
by a transmitter. The Beacon Tx mode allows for the re-transmission of the same packet without having to fill the FIFO
multiple times with the same data.
When BeaconOn in RegPacketConfig2 is set to 1, the FIFO can be filled only once in Sleep or Stdby mode with the
required payload. After a first transmission, FifoEmpty will go high as usual, but the FIFO content will be restored when the
chip exits Transmit mode. FifoEmpty, FifoFull and FifoLevel flags are also restored.
This feature is only available in Fixed packet format, with the Payload Length smaller than the FIFO size. The control of the
chip modes (Tx-Sleep-Tx....) can either be undertaken by the microcontroller, or be automated in the Top Sequencer. See
example in section 4.2.13.8.
The Beacon Tx mode is exited by setting BeaconOn to 0, and clearing the FIFO by setting FifoOverrun to 1.
4.2.14. io-homecontrolĀ® Compatibility Mode
The RFM95/96/97/98(W) features a io-homecontrol
Ā®
compatibility mode. Please contact your local Hope RF
representative for details on its implementation.




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