Data Sheet

Page 99
RFM95/96/97/98(W)
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WIRELESS & SENSING PRELIMINARY DATASHEET
Name
(Address)
Bits
Variable Name
Mode
Default
value
FSK/OOK Description
7-6 Dio0Mapping rw 0x00
5-4 Dio1Mapping rw 0x00
3-2 Dio2Mapping rw 0x00
RegDioMapping1
(0x40)
1-0 Dio3Mapping rw 0x00
7-6 Dio4Mapping rw 0x00
5-4 Dio5Mapping rw 0x00
Mapping of pins DIO0 to DIO5
See Table 23 for mapping in LoRa mode
See Table 27 for mapping in Continuous mode
See table 28 for mapping in Packet mode
3-1 reserved rw 0x00 reserved. Retain default value
RegDioMapping2
(0x41)
0 MapPreambleDetect rw 0x00
Allows the mapping of either Rssi Or PreambleDetect to the DIO
pins, as summarized on Table 27 and Table 28
0 Æ Rssi interrupt
1 Æ PreambleDetect interrupt
Version register
RegVersion
(0x42)
7-0 Version r 0x11
Version code of the chip. Bits 7-4 give the full revision number;
bits 3-0 give the metal mask revision number.
Additional registers
7 FastHopOn rw 0x00
Bypasses the main state machine for a quick frequency hop.
Writing RegFrfLsb will trigger the frequency change.
0 Æ Frf is validated when FSTx or FSRx is requested
1 Æ Frf is validated triggered when RegFrfLsb is written
RegPllHop
(0x44)
6-0 reserved rw 0x2d reserved
7-5 reserved rw 0x00 reserved. Retain default value
4 TcxoInputOn rw 0x00
Controls the crystal oscillator
0 Æ Crystal Oscillator with external Crystal
1 Æ External clipped sine TCXO AC-connected to XTA pin
RegTcxo
(0x4b)
3-0 reserved rw 0x09 Reserved. Retain default value.
7-3 reserved rw 0x10 reserved. Retain default value
RegPaDac
(0x4d)
2-0 PaDac rw 0x04
Enables the +20dBm option on PA_BOOST pin
0x04 Æ Default value
0x07 Æ +20dBm on PA_BOOST when OutputPower=1111
RegFormerTemp
(0x5b)
7-0 FormerTemp rw -
Temperature saved during the latest IQ (RSSI and Image)
calibrated. Same format as TempValue in RegTemp.
7-4 unused r 0x00 unused
RegBitrateFrac
(0x5d)
3-0 BitRateFrac rw 0x00
Fractional part of the bit rate divider (Only valid for FSK)
If BitRateFrac> 0 then:
BitRate =
---------------------------
F
----
X
----
O
-----
S
---
C
------------------------------
Bi tR ate(15,0) +
-
B
- ---
i
--
t
--
r
--
a
----
t
--
e
---
F
----
r
--
a
----
c
-
16