C2510Fx / CC2511Fx
0xDF18: AGCCTRL1 – AGC Control
Bit Field Name
Reset
R/W Description
R0 Not used
7
-
6
AGC_LNA_PRIORITY
1
R/W Selects between two different strategies for LNA and LNA2
gain adjustment. When 1, the LNA gain is decreased first.
When 0, the LNA2 gain is decreased to minimum before
decreasing LNA gain.
5:4 CARRIER_SENSE_REL_THR[1:0]
00
R/W Sets the relative change threshold for asserting carrier sense
00
01
10
11
Relative carrier sense threshold disabled
6 dB increase in RSSI value
10 dB increase in RSSI value
14 dB increase in RSSI value
3:0 CARRIER_SENSE_ABS_THR[3:0]
0000
R/W Sets the absolute RSSI threshold for asserting carrier sense
(Equal to channel filter amplitude when AGC has not
decreased gain). The 2-complement signed threshold is
programmed in steps of 1 dB and is relative to the
MAGN_TARGETsetting.
1000 (-8)
1001 (-7)
…
Absolute carrier sense threshold disabled
7 dB below MAGN_TARGETsetting
…
1111 (-1)
0000 (0)
0001 (1)
…
1 dB below MAGN_TARGETsetting
At MAGN_TARGETsetting
1 dB above MAGN_TARGETsetting
…
0111 (7)
7 dB above MAGN_TARGETsetting
SWRS055D
Page 224 of 243
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