ADF7242 must have rx mac delay?

System configuration(GFSK, 2Mbps, syncword and preamble will be minimized)

  1. TX

      - Only TX by wireless

      - MCU + RF Chip 

      - send 2bytes / 100usec

  2. RX

      - Only RX by wireless

      - MCU + RF Chip

      - receive 2bytes / 100usec

I want to periodically send 2 bytes of data wirelessly.(period : 100usec)

And I want to receive periodically transmitted data.

In the manual "GFSK / FSK Receive Timing and Control" on page 60, the MAC delay is 664 usec.

Do I need to execute the RC_RX command if I continue to receive continuously without changing the mode after setting RX?

Please let me know.

Thank you.

  • +1
    •  Analog Employees 
    on May 15, 2019 12:25 AM

    Hi EYoo229,

    If you're receiving continuously and in SPORT mode (not packet mode) and you plan to use the same frequency channel, you don't need to issue an RC_RX command. It would stay in RX until you issue an RC_RDY command. For GFSK/FSK state transition timing, please refer to Table 11 of the data sheet. Note that if your transmitter does not transmit continuously and would require a transition to/from PHY_RDY, then you need to consider the associated transition delay.