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CC1101: Does it is compatible with the chip AX5043?

luis.lopez
Expert 1050 points
Part Number: CC1101
Other Parts Discussed in Thread: MSP430F1611,

Hello to everyone!

We have a system based on the MSP430F1611 and the CC1101-CC1190 and we want to receive radio frames from some sensors that are based on the radio chip AX5043 of AXSEM. 

Physically, they have the same configuration, and aparently the framing header (preamble + syncword+length+address, NO CRC on both) are the same, but we don't receive anything from the sensors. We have changed on the CC1101 the header configuration (non preamble, 16 bits of preamble, 32 bits, etc) , the addressing matching, etc; well, we are in the fase of try and error. On the sensors side, I am afraid that we can't change their configuration.

With the Spectrum Analyzer we compare the sensors and our system signals and they are tuned on the same base frequency (869.4MHz) so we think that the problem is on the framing identification. Anyone knows if the CC1101 and AX5043 are compatible?

Thanks in advance!!

PD: In the image, the green signal is emitted by the sensors (AX5043) and the yellow one is our signal.

Best regards,

  • 0
    TI__Guru**** 317180 points
    I don't see any reason why they should not be compatible.

    I would recommend using SmartRF Studio to control a CC1101. (The easiest would be if you have a CC1101EM or similar).

    Set the sync word to 0xAAAA and fixed packet length. If you have set up CC1101 with the same modulation format as AX5043 (datarate, deviation) you should get data into the FIFO. The first bytes should be the sync word. This will verify that you have selected the correct frame settings etc.