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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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RF96 датащи(PDF) 41 Page - HOPE Microelectronics CO., Ltd. |
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RF96 датащи(HTML) 41 Page - HOPE Microelectronics CO., Ltd. |
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41 / 121 page  Page 41 RF96/97/98 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com WIRELESS & SENSING PRELIMINARY DATASHEET Table 63 DIO Mapping LoRa TM Mode Operating Mode DIOx Mapping DIO5 DIO4 DIO3 DIO2 DIO1 DIO0 ALL 00 ModeReady CadDetected CadDone FhssChangeChannel RxTimeout RxDone 01 ClkOut PllLock ValidHeader FhssChangeChannel FhssChangeChannel TxDone 10 ClkOut PllLock PayloadCrcError FhssChangeChannel CadDetected CadDone 11 - - - - - - 4.2. FSK/OOK Modem 4.2.1. Bit Rate Setting The bitrate setting is referenced to the crystal oscillator and provides a precise means of setting the bit rate (or equivalently chip) rate of the radio. In continuous transmit mode (Section 3.2.2) the data stream to be transmitted can be input directly to the modulator via pin 9 (DIO2/DATA) in an asynchronous manner, unless Gaussian filtering is used, in which case the DCLK signal on pin 10 (DIO1/DCLK) is used to synchronize the data stream. See section 4.2.2.3 for details on the Gaussian filter. In Packet mode or in Continuous mode with Gaussian filtering enabled, the Bit Rate (BR) is controlled by bits Bitrate in RegBitrateMsb and RegBitrateLsb BitRate = --------------------------- F ---- X ---- O ----- S --- C ------------------------------ BitRate(15,0) + ----- i -- t -- r -- a ---- t -- e --- F ---- r -- a ---- c - 16 Note: BitrateFrac bits have no effect (i.e may be considered equal to 0) in OOK modulation mode. The quantity BitrateFrac is hence designed to allow very high precision (max. 250 ppm programing resolution) for any bitrate in the programmable range. Table 64 below shows a range of standard bitrates and the accuracy to within which they may be reached. |
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