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RF96 Datasheet(PDF) 110 Page - HOPE Microelectronics CO., Ltd. |
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RF96 Datasheet(HTML) 110 Page - HOPE Microelectronics CO., Ltd. |
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110 / 121 page  Page 110 RF96/97/98 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com Timer2 WIRELESS & SENSING PRELIMINARY DATASHEET 7.3.1.1. Timing Diagram When no signal is received, the circuit wakes every Timer1 + Timer2 and switches to Receive mode for a time defined by Timer2, as shown on the following diagram. If no Preamble is detected, it then switches back to Idle mode, i.e. Sleep mode with RC oscillator on. No received signal Receive Idle ( Sleep + RC ) Receive Idle Timer1 Timer2 Timer1 Timer2 Timer1 Figure 45. Listen Mode with No Preamble Received If a Preamble signal is detected, the Sequencer is switched off. The PreambleDetect signal can be mapped to DIO4, in order to request the user's attention. The user can then take appropriate action. Received signal Preamble ( As long as T1 + 2 * T2 ) Sync Word Payload Crc Idle ( Sleep + RC ) Receive Timer1 Timer2 Preamble Detect Figure 46. Listen Mode with Preamble Received |
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