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RFM95 Datasheet(PDF) 88 Page - HOPE Microelectronics CO., Ltd.

Part No. RFM95
Description  Low Power Long Range Transceiver Module
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Maker  HOPE [HOPE Microelectronics CO., Ltd.]
Homepage  https://www.hoperf.com/
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 88 page
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Page 88
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
RegFrfMsb
(0x06)
7-0
Frf(23:16)
rw
0x6c
MSB of the RF carrier frequency
RegFrfMid
(0x07)
7-0
Frf(15:8)
rw
0x80
MSB of the RF carrier frequency
RegFrfLsb
(0x08)
7-0
Frf(7:0)
rw
0x00
LSB of RF carrier frequency
Frf = Fstep Ă— Frf(23;0)
Default value: 434.000 MHz
The RF frequency is taken into account internally only when:
- entering FSRX/FSTX modes
- re-starting the receiver
Registers for the Transmitter
7
PaSelect
rw
0x00
Selects PA output pin
0
RFO pin. Maximum power of +14 dBm
1
PA_BOOST pin. Maximum power of +20 dBm
6-4
MaxPower
rw
0x04
Select max output power: Pmax=10.8+0.6*MaxPower [dBm]
RegPaConfig
(0x09)
3-0
OutputPower
rw
0x0f
Pout=Pmax-(15-OutputPower) if PaSelect = 0 (RFO pins)
Pout=17-(15-OutputPower)
if PaSelect = 1 (PA_BOOST pin)
7
unused
r
0x00
unused
6-5
ModulationShaping
rw
0x00
Data shaping:
In FSK:
00
no shaping
01
gaussian filter BT = 1.0
10
gaussian filter BT = 0.5
11
gaussian filter BT = 0.3
In OOK:
00
no shaping
01
filtering with fcutoff = bit_rate
10
filtering with fcutoff = 2*bit_rate (for bit_rate < 125 kb/s)
11
reserved
4
reserved
rw
0x00
reserved
RegPaRamp
(0x0A)
3-0
PaRamp
rw
0x09
Rise/Fall time of ramp up/down in FSK
0000
3.4 ms
0001
2 ms
0010
1 ms
0011
500 us
0100
250 us
0101
125 us
0110
100 us
0111
62 us
1000
50 us
1001
40 us (d)
1010
31 us
1011
25 us
1100
20 us
1101
15 us
1110
12 us
1111
10 us




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