RFM95 Datasheet, PDF (51/121 Pages) List of Unclassifed Manufacturers – Low Power Long Range Transceiver Module

WIRELESS & SENSING
RFM95/96/97/98(W)
PRELIMINARY
DATASHEET
4.2.5.1. Transmitter Startup Time
The transmitter startup time, TS_TR, is calculated as follows in FSK mode:
TS _ TR = 5μs +1.25× PaRamp + ¹ ×Tbit
2
,
where PaRamp is the ramp-up time programmed in RegPaRamp and Tbit is the bit time.
In OOK mode, this equation can be simplified to the following:
TS _ TR = 5μs + ¹ ×Tbit
2
4.2.5.2. Receiver Startup Time
The receiver startup time, TS_RE, only depends upon the receiver bandwidth effective at the time of startup. When AFC is
enabled (AfcAutoOn=1), AfcBw should be used instead of RxBw to extract the receiver startup time:
Table 68 Receiver Startup Time Summary
RxBw if AfcAutoOn=0
RxBwAfc if AfcAutoOn=1
2.6 kHz
3.1 kHz
3.9 kHz
5.2 kHz
6.3 kHz
7.8 kHz
10.4 kHz
12.5 kHz
15.6 kHz
20.8 kHz
25.0 kHz
31.3 kHz
41.7 kHz
50.0 kHz
62.5 kHz
83.3 kHz
100.0 kHz
125.0 kHz
166.7 kHz
200.0 kHz
250.0 kHz
TS_RE
(+/-5%)
2.33 ms
1.94 ms
1.56 ms
1.18 ms
984 us
791 us
601 us
504 us
407 us
313 us
264 us
215 us
169 us
144 us
119 us
97 us
84 us
71 us
85 us
74 us
63 us
TS_RE or later after setting the device in Receive mode, any incoming packet will be detected and demodulated by the
transceiver.
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