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RF96 Datasheet(PDF) 115 Page - HOPE Microelectronics CO., Ltd. |
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RF96 Datasheet(HTML) 115 Page - HOPE Microelectronics CO., Ltd. |
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115 / 121 page ![]() Page 115 RF96/97/98 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com WIRELESS & SENSING PRELIMINARY DATASHEET 7.4. Top Sequencer: Beacon Mode In this mode, a repetitive message is transmitted periodically. If the Payload being sent is always identical, and PayloadLength is smaller than the FIFO size, the use of the BeaconOn bit in RegPacketConfig2 together with the Sequencer permit to achieve periodic beacon without any user intervention. 7.4.1. Timing diagram In this mode, the Radio is switched to Transmit mode every TTimer1 + TTimer2 and back to Idle mode after PacketSent, as shown in the diagram below. The Sequencer insures minimal time is spent in Transmit mode, and therefore power consumption is optimized. Beacon mode Idle Transmit Idle ( Sleep + RC ) Transmit Idle Timer1 Timer2 Timer2 Timer1 Timer1 Packet Sent Packet Sent Figure 52. Beacon Mode Timing Diagram 7.4.2. Sequencer Configuration The Beacon mode state machine is presented in the following graph. It is noticeable that the sequencer enters an infinite loop and can only be stopped by setting SequencerStop bit in RegSeqConfig1. State M achine Sequencer Off & Initial mode = Sleep or Standby Start bit set IdleMode = 1 : Sleep Start FromStart = 00 LowPower Selection LowPowerSelection = 1 Idle On T1 FromIdle = 0 On PacketSent FromTransmit = 0 Transmit Figure 53. Beacon Mode State Machine |
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