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RFM95 Datasheet(HTML) 52 Page - HOPE Microelectronics CO., Ltd.

Part No. RFM95
Description  Low Power Long Range Transceiver Module
Download  121 Pages
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Maker  HOPE [HOPE Microelectronics CO., Ltd.]
Homepage  https://www.hoperf.com/
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RFM95 Datasheet(HTML) 52 Page - HOPE Microelectronics CO., Ltd.

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Page 52
RFM95/96/97/98(W)
Tel: + 86-755-82973805
Fax: + 86-755-82973550
E-mail: sales@hoperf.com http:/ / www.hoperf.com
Tx Mode
Rx Mode
WIRELESS & SENSING
PRELIMINARY
DATASHEET
4.2.5.3. Time to RSSI Evaluation
The first RSSI sample will be available TS_RSSI after the receiver is ready, in other words TS_RE + TS_RSSI after the
receiver was requested to turn on.
Timeline
0
TS_RE
TS_RE
+TS_RSSI
FSRx
Rx
Rssi IRQ
Rssi sample
ready
Figure 18. Time to Rssi Sample
TS_RSSI depends on the receiver bandwidth, as well as the RssiSmoothing option that was selected. The formula used to
calculate TS_RSSI is provided in section 2.5.4.
4.2.5.4. Tx to Rx Turnaround Time
Timeline
0
TS_HOP
+TS_RE
1. set new Frf (*)
2. set Rx mode
Rx Mode
(*) Optional
Figure 19. Tx to Rx Turnaround
Note
The SPI instruction times are omitted, as they can generally be very small as compared to other timings (up to
10MHz SPI clock).
4.2.5.5. Rx to Tx
Timeline
0
TS_HOP
+TS_TR
1. set new Frf (*)
2. set Tx mode
Tx Mode
(*) Optional
Figure 20. Rx to Tx Turnaround


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