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RFM95 Datasheet(PDF) 100 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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 100 page
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Page 100
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
7-6
unused
r
-
unused
RegAgcRef
(0x61)
5-0
AgcReferenceLevel
rw
0x19
Sets the floor reference for all AGC thresholds:
AGC Reference[dBm]=
-174dBm+10*log(2*RxBw)+SNR+AgcReferenceLevel
SNR = 8dB, fixed value
7-5
unused
r
-
unused
RegAgcThresh1
(0x62)
4-0
AgcStep1
rw
0x0c
Defines the 1st AGC Threshold
7-4
AgcStep2
rw
0x04
Defines the 2nd AGC Threshold:
RegAgcThresh2
(0x63)
3-0
AgcStep3
rw
0x0b
Defines the 3rd AGC Threshold:
7-4
AgcStep4
rw
0x0c
Defines the 4th AGC Threshold:
RegAgcThresh3
(0x64)
3-0
AgcStep5
rw
0x0c
Defines the 5th AGC Threshold:
6.3. Band Specific Additional Registers
The registers in the address space from 0x61 to 0x73 are specific for operation in the lower frequency bands (below 525
MHz), or in the upper frequency bands (above 860 MHz). Their programmed value may differ, and are retained when
switching from lower to high frequency and vice-versa. The access to the band specific registers is granted by enabling or
disabling the bit 3 LowFrequencyModeOn of the RegOpMode register. By default, the bit LowFrequencyModeOn is at ‘1’
indicating that the registers are configured for the low frequency band.
Table 87 Low Frequency Additional Registers
Name
(Address)
Bits
Variable Name
Mode
Default
value
Low Frequency Additional Registers
7-6
unused
r
-
unused
RegAgcRefLf
(0x61)
5-0
AgcReferenceLevel
rw
0x19
Sets the floor reference for all AGC thresholds:
AGC Reference[dBm]=
-174dBm+10*log(2*RxBw)+SNR+AgcReferenceLevel
SNR = 8dB, fixed value
7-5
unused
r
-
unused
RegAgcThresh1Lf
(0x62)
4-0
AgcStep1
rw
0x0c
Defines the 1st AGC Threshold
7-4
AgcStep2
rw
0x04
Defines the 2nd AGC Threshold:
RegAgcThresh2Lf
(0x63)
3-0
AgcStep3
rw
0x0b
Defines the 3rd AGC Threshold:
7-4
AgcStep4
rw
0x0c
Defines the 4th AGC Threshold:
RegAgcThresh3Lf
(0x64)
3-0
AgcStep5
rw
0x0c
Defines the 5th AGC Threshold:
7-6
PllBandwidth
rw
0x03
Controls the PLL bandwidth:
00
75 kHz
10
225 kHz
01
150 kHz
11
300 kHz
RegPllLf
(0x70)
5-0
reserved
rw
0x10
reserved. Retain default value




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