CC2510FX Datasheet, PDF (199/244 Pages) List of Unclassifed Manufacturers – True System-on-Chip with Low Power RF Transceiver and 8051 MCU

f _RSSI
= ^{2 ⋅ BWchannel}
8 ⋅ 2^{FILTER _ LENGTH}
If PKTCTRL1.APPEND_STATUS is enabled the
RSSI value at sync word detection is
automatically added to the first byte appended
after the data payload.
The RSSI value read from the RSSI status
register is a 2’s complement number. The
following procedure can be used to convert the
RSSI reading to an absolute power level
(RSSI_dBm).
1) Read the RSSI status register
C2510Fx / CC2511Fx
2) Convert the reading from a hexadecimal
number to a decimal number
(RSSI_dec)
3) If RSSI_dec ≥ 128 then RSSI_dBm =
(RSSI_dec - 256)/2 – RSSI_offset
4) Else if RSSI_dec < 128 then RSSI_dBm
= (RSSI_dec)/2 – RSSI_offset
Table 68 provides typical values for the
RSSI_offset.
Figure 51 shows typical plots of RSSI readings
as a function of input power level for different
data rates.
Data Rate [kBaud]
2.4
10
250
500
RSSI_offset [dB]
74
74
71
72
Table 68: Typical RSSI_offset Values
SWRS055D
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