C2510Fx / CC2511Fx
2) Convert the reading from a hexadecimal
2⋅ BWchannel
fRSSI
=
number
to
a
decimal
number
8⋅2FILTER _ LENGTH
(RSSI_dec)
If PKTCTRL1.APPEND_STATUSis enabled the
RSSI value at sync word detection is
automatically added to the first byte appended
after the data payload.
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
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).
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.
1) Read the RSSI status register
Data Rate [kBaud]
RSSI_offset [dB]
2.4
10
74
74
71
72
250
500
Table 68: Typical RSSI_offset Values
SWRS055D
Page 199 of 243
TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
