SX1232
WIRELESS & SENSING
DATASHEET
Name
(Address)
Default
value
Bits
Mode
Variable Name
Description
RegRssiConfig 7-3
(0x0e)
RssiOffset
rw
0x00 Signed RSSI offset, to compensate for the possible losses/
gains in the front-end (LNA, SAW filter...)
1dB / LSB, 2’s complement format
2-0
RssiSmoothing
rw
0x02 Defines the number of samples taken to average the RSSI
result:
000 Æ 2 samples used
001 Æ 4 samples used
010 Æ 8 samples used
011 Æ 16 samples used
100 Æ 32 samples used
101 Æ 64 samples used
110 Æ 128 samples used
111 Æ 256 samples used
RegRssiCollision 7-0
(0x0f)
RssiCollisionThreshold
rw
0x0a Sets the threshold used to consider that an interferer is
detected, witnessing a packet collision. 1dB/LSB (only RSSI
increase)
Default: 10dB
RegRssiThresh
(0x10)
7-0
7-0
RssiThreshold
RssiValue
rw
r
0xff RSSI trigger level for the Rssi interrupt :
- RssiThreshold / 2 [dBm]
RegRssiValue
(0x11)
-
Absolute value of the RSSI in dBm, 0.5dB steps.
RSSI = - RssiValue/2 [dBm]
RegRxBw
(0x12)
7
unused
reserved
RxBwMant
r
-
unused
6-5
4-3
rw
rw
0x00 reserved
0x02
Channel filter bandwidth control:
00 Æ RxBwMant = 16
01 Æ RxBwMant = 20
10 Æ RxBwMant = 24
11 Æ reserved
2-0
RxBwExp
rw
0x05
Channel filter bandwidth control:
FSK Mode:
FXOSC
RxBwMant × 2RxBwExp + 2
-----------------------------------------------------------------
RxBw =
RegAfcBw
(0x13)
7-5
4-3
2-0
reserved
rw
rw
rw
0x00 reserved
RxBwMantAfc
RxBwExpAfc
0x01 RxBwMant parameter used during the AFC
0x03 RxBwExp parameter used during the AFC
Rev 3 - August 2012
Page 70
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