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CC1101: CC1101 OOK

Kenneth Wood
Intellectual 490 points
Part Number: CC1101

Tool/software:

I know that this has been asked before and answered before but I have to ask using a specific part.

I have an immediate need to use a pre-made 433MHz FOB with a CC1101 receiver.

OTX-433-HH-KF2-MS

www.te.com/.../DDEController

The FOB is OOK, 9,600 Baud...seems very simple but I need a definite answer...can I pair these two devices reliably?
Thanks

We have designed our own FOB but need to use the OTS unit until FCC certification. The receiver is an existing CC1101 board.

Ken

  • 0
    TI__Mastermind 18335 points

    Hi Ken,

    There doesn't look to be any detailed information about the PHY provided. This is important for correctly receiving your data.

    The CC1101 requires a preamble and sync word to use the FIFO mode and it is possible that this PHY does not use one. If it does not have a preamble and sync word, then you will need to use "Asychronous Mode" (Section 27.1 of the CC1101 Datasheet: https://www.ti.com/lit/swrs061) and interpret the received data on the MCU.

    The follow App Note may also be important for good receiver performance: 

    SWRA215 (CC110x CC111x OOK ASK Register Settings): https://www.ti.com/lit/swra215

    We recommend using SmartRF Studio 7 and one of the predefined CC1101 ASK/OOK settings as a starting point for finding the correct register settings for your application (modifying the settings to the correct data rate, ect.). You can then export the register settings for use in your code.

    Regards,

    Zack