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  • Is there any way to avoid receiving data during CCA?
    • To prevent data reception during CCA, follow the steps shown below. To restore data reception after CCA, be sure to return to the original setting before reception.
      (1) Setting to prevent bit synchronization from being established
      BANK1: 0x5C = 0x00
      BANK3: 0x03 = 0x00
      (2) CCA started
      (3) Waiting for CCA completion
      (4) After completion of CCA, TRX_OFF
      (1) Setting to establish bit synchronization
      BANK1: 0x5C = original value
      BANK3: 0x03 = original value

      Related Products: ML7345 family

  • The system waits while changing channels until the receiver receives the radio wave from the transmitter. Is there anything to be aware of about this system?
    • The receiver changes channels until it receives radio waves from the sender. For this reason, the transmission side must keep sending the preamble until the receiver detects the transmitted channel. Therefore, taking into account the number of channels to search for radio waves, a long preamble is required. Also, if there is only a radio wave, the receiving side may make an erroneous channel determination based on radio waves from other systems. For this reason, it is necessary to consider the "criterion for presence of radio waves (bit synchronization information, etc.)" that uses signals other than radio waves.

      Related Products: ML7344/ML7406 family, ML7345 family, ML7396 family, ML7404, ML7414

  • Is there a way to prevent interference between the transmitted radio waves from two transmitters?
    If possible, how many sets can be done?
    • The following two methods can be considered.
      (1) Identifying by changing SyncWord
      (When transmitter⇔receiver is one-to-one)
      The setting can be up to 4Byte (2^32) of SyncWord setting. Except patterns with extremely large number of 1's or 0's, it is assumed that approximately 2^24 patterns can be used.
      (2) Managing addresses
      When one transmitter (master) and multiple receivers (slaves) exist, set the addresses of the slaves.
      The slave units receive only packets destined to themselves (addresses) (using field check function).
      Addresses can be assigned for up to 2^48-1 units (6 bytes).

      Related Products: ML7345 family, ML7404, ML7414

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