Data Sheet

Page 97
RFM95/96/97/98
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WIRELESS & SENSING PRELIMINARY DATASHEET
Name
(Address)
Bits
Variable Name
Mode
Default
value
FSK/OOK Description
Service registers
RegImageCal
(0x3b)
7
AutoImageCalOn
rw
0x00
*
Controls the Image calibration mechanism
0  Calibration of the receiver depending on the temperature is
disabled
1  Calibration of the receiver depending on the temperature
enabled.
6
ImageCalStart
wt
-
Triggers the IQ and RSSI calibration when set in Standby mode.
5
ImageCalRunning
r
0x00
Set to 1 while the Image and RSSI calibration are running.
Toggles back to 0 when the process is completed
4
unused
r
-
unused
3
TempChange
r
0x00
IRQ flag witnessing a temperature change exceeding
TempThreshold since the last Image and RSSI calibration:
0  Temperature change lower than TempThreshold
1  Temperature change greater than TempThreshold
2-1
TempThreshold
rw
0x01
Temperature change threshold to trigger a new I/Q calibration
00  5 °C
01  10 °C
10  15 °C
11  20 °C
0
TempMonitorOff
rw
0x00
Controls the temperature monitor operation:
0  Temperature monitoring done in all modes except Sleep and
Standby
1  Temperature monitoring stopped.
RegTemp
(0x3c)
7-0
TempValue
r
-
Measured temperature
-1°C per Lsb
Needs calibration for absolute accuracy
RegLowBat
(0x3d)
7-4
unused
r
-
unused
3
LowBatOn
rw
0x00
Low Battery detector enable signal
0  LowBat detector disabled
1  LowBat detector enabled
2-0
LowBatTrim
rw
0x02
Trimming of the LowBat threshold:
000  1.695 V
001  1.764 V
010  1.835 V (d)
011  1.905 V
100  1.976 V
101  2.045 V
110  2.116 V
111  2.185 V
Status registers