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RFM95 Datasheet(HTML) 62 Page - HOPE Microelectronics CO., Ltd.

Part No. RFM95
Description  Low Power Long Range Transceiver Module
Download  121 Pages
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Maker  HOPE [HOPE Microelectronics CO., Ltd.]
Homepage  https://www.hoperf.com/
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RFM95 Datasheet(HTML) 62 Page - HOPE Microelectronics CO., Ltd.

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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
FifoLevel
1
0
B
B+1
# of bytes in FIFO
Figure 27. FifoLevel IRQ Source Behavior
Notes - FifoLevel interrupt is updated only after a read or write operation on the FIFO. Thus the interrupt cannot be
dynamically updated by only changing the FifoThreshold parameter
- FifoLevel interrupt is valid as long as FifoFull does not occur. An empty FIFO will restore its normal operation
FIFO Clearing
Table below summarizes the status of the FIFO when switching between different modes
Table 73 Status of FIFO when Switching Between Different Modes of the Chip
From
To
FIFO status
Comments
Stdby
Sleep
Not cleared
Sleep
Stdby
Not cleared
Stdby/Sleep
Tx
Not cleared
To allow the user to write the FIFO in Stdby/Sleep before Tx
Stdby/Sleep
Rx
Cleared
Rx
Tx
Cleared
Rx
Stdby/Sleep
Not cleared
To allow the user to read FIFO in Stdby/Sleep mode after Rx
Tx
Any
Cleared
4.2.10.1. Sync Word Recognition
Overview
Sync word recognition (also called Pattern recognition) is activated by setting SyncOn in RegSyncConfig. The bit
synchronizer must also be activated in Continuous mode (automatically done in Packet mode).
The block behaves like a shift register; it continuously compares the incoming data with its internally programmed Sync
word and sets SyncAddressMatch when a match is detected. This is illustrated in Figure 28 below.


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