RF65 datasheet(32/72 Pages) ETC2

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RF65

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ADVANCED COMMUNICATIONS & SENSING

DATASHEET

4.2.2. Rx Start Procedure

As described in the former sections, the RxReady interrupt warns the uC that the receiver is ready.



In Continuous mode with Bit Synchronizer, the receiver will start locking its Bit Synchronizer on a minimum or 12 bits of

received preamble (see section 3.4.14 for details), before the reception of correct Data, or Sync Word (if enabled) can

occur.



In Continuous mode without Bit Synchronizer, valid data will be available on DIO2/DATA right after the RxReady

interrupt.



In Packet mode, the receiver will start locking its Bit Synchronizer on a minimum or 12 bits of received preamble (see

section 3.4.14 for details), before the reception of correct Data, or Sync Word (if enabled) can occur.

4.2.3. Optimized Frequency Hopping Sequences

In a frequency hopping-like application, it is required to turn off the receiver when hopping from one channel to another, to

optimize the hopping sequence:

Receiver hop from Ch A to Ch B:

(0) RF65 is in Rx mode in Ch A

(1) Change the carrier frequency in the RegFrf registers

(2) Program the RF65 in FS mode

(3) Turn the receiver back to Rx mode

(4) Respect the Rx start procedure, described in section 4.2.4

Note

the above sequence assumes that the sequencer is turned on (SequencerOff=0 in RegOpMode).

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