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Is there any way to avoid receiving data during CCA?
- To prevent data reception during CCA, follow the procedure shown below at the time of initial setting.
  [Procedure]
  (1) Setting to prevent bit synchronization from being established during CCA
  BANK3: 0x2D = 0x01 (default: 0x00)
  *There is no need to dynamically switch the setting according to CCA.
  Related Products: ML7404, ML7414

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.
  [Procedure]
  (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

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.
  [Procedure]
  (1) Setting to prevent bit synchronization from being established
  BANK2: 0x03 = 0x00
  BANK2: 0x0E = 0x00
  (2) CCA started
  (3) Waiting for CCA completion
  (4) After completion of CCA, TRX_OFF
  (1) Setting to establish bit synchronization
  BANK2: 0x03 = original value
  BANK2: 0x0E = original value
  Related Products: ML7396 family

When using the value set in PA_REG_ADJ [0-8] for operation, is PA_REG_ADJ_SEL = 1 correct?
- To adjust the transmission power in TX_ON state, set PA_REG_ADJ_SEL ([PA_REG_ADJ: B0 0x67 (7)]) = 1. Other than transmission power adjustment, set PA_REG_ADJ_SEL = 0. For details, refer to the data sheet "LSI Adjustment Items and Adjustment Methods"-"PA Adjustment".
  Related Products: ML7404, ML7414

If the TRX_OFF instruction is used in the "RF_STATUS" register during RX_ON, the RX_ON state may remain in its state rather than becoming the TRX_OFF state. If the Force TRX_OFF instruction is used, the RX_ON state will shift to the TRX_OFF state without any obstructions. What can be considered as a factor that makes the TRX_OFF instruction ineffective during RX_ON?
- When the following DIO mode is used, it is recognized that reception is in progress, so the action will continue even if the TRX_OFF instruction is executed. Therefore, in this mode, use the Force_TRX_OFF instruction to switch the state to TRX_OFF.
  - Constant output mode (RXDIO_CTRL = 0b01)
  "Constant reception in progress" is determined. To stop reception, issue the Force_TRX_OFF instruction.
  - Data output mode 1 (RXDIO_CTRL = 0b10)
  "Reception in progress after detecting SyncWord" is determined. To stop reception, issue the Force_TRX_OFF instruction.
  Related Products: ML7344/ML7406 family, ML7345 family, ML7404, ML7414

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

If there is interference (when radio waves simultaneously transmitted from different transmitters collide), it may be impossible to receive data (SyncWord or addresses) in the first place. Is there a way to avoid missing data to be received due to collision?
- If data is transmitted simultaneously on the same channel, it may become unable to receive the data due to the RF interference characteristics. However, ARIB STD T-108 requires CCA to be performed before transmission. For this reason, there is a mechanism to avoid interference due to simultaneous transmission from nearby transmitters.
  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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