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RFM95 Datasheet(PDF) 90 Page - Shenzhen Hope Microelectronics Co., Ltd. |
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RFM95 Datasheet(HTML) 90 Page - Shenzhen Hope Microelectronics Co., Ltd. |
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90 / 121 page  Page 90 RFM95/96/97/98(W) Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com WIRELESS & SENSING PRELIMINARY DATASHEET Name (Address) Bits Variable Name Mode Default value FSK/OOK Description 7 RestartRxOnCollision rw 0x00 Turns on the mechanism restarting the receiver automatically if it gets saturated or a packet collision is detected 0 No automatic Restart 1 Automatic restart On 6 RestartRxWithoutPllLock wt 0x00 Triggers a manual Restart of the Receiver chain when set to 1. Use this bit when there is no frequency change, RestartRxWithPllLock otherwise. 5 RestartRxWithPllLock wt 0x00 Triggers a manual Restart of the Receiver chain when set to 1. Use this bit when there is a frequency change, requiring some time for the PLL to re-lock. 4 AfcAutoOn rw 0x00 0 No AFC performed at receiver startup 1 AFC is performed at each receiver startup 3 AgcAutoOn rw 0x01 0 LNA gain forced by the LnaGain Setting 1 LNA gain is controlled by the AGC RegRxConfig (0x0d) 2-0 RxTrigger rw 0x06 * Selects the event triggering AGC and/or AFC at receiver startup. See Table 18 for a description. 7-3 RssiOffset rw 0x00 Signed RSSI offset, to compensate for the possible losses/gains in the front-end (LNA, SAW filter...) 1dB / LSB, 2’s complement format RegRssiConfig (0x0e) 2-0 RssiSmoothing rw 0x02 Defines the number of samples taken to average the RSSI result: 000 2 samples used 001 4 samples used 010 8 samples used 011 16 samples used 100 32 samples used 101 64 samples used 110 128 samples used 111 256 samples used RegRssiCollision (0x0f) 7-0 RssiCollisionThreshold rw 0x0a Sets the threshold used to consider that an interferer is detected, witnessing a packet collision. 1dB/LSB (only RSSI increase) Default: 10dB RegRssiThresh (0x10) 7-0 RssiThreshold rw 0xff RSSI trigger level for the Rssi interrupt: - RssiThreshold / 2 [dBm] RegRssiValue (0x11) 7-0 RssiValue r - Absolute value of the RSSI in dBm, 0.5dB steps. RSSI = - RssiValue/2 [dBm] 7 unused r - unused 6-5 reserved rw 0x00 reserved 4-3 RxBwMant rw 0x02 Channel filter bandwidth control: 00 RxBwMant = 16 10 RxBwMant = 24 01 RxBwMant = 20 11 reserved RegRxBw (0x12) 2-0 RxBwExp rw 0x05 Channel filter bandwidth control: FSK Mode: RxBw = ------------------------ F ----X----O ----S----C------------------------- RxBwMant × 2RxBwExp + 2 |
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