Texas Instruments CC2500 - Page 75

CC2500
S
WRS040
C
Page
75
of
89
0x1B: AGCCTRL2
–
AGC
C
ontrol
Bit
Field Name
Reset
R/W
Description
7:6
MAX_DVGA_GAIN[1:0]
0 (00)
R/W
Reduces the maximum allowable DVGA gain.
Setting
Al
lowable DVGA settings
0 (00)
All gain settings can be used
1 (01)
The highest gain setting can not be used
2 (10)
The 2 highest gain settings can not be used
3 (11)
The 3 highest gain settings can not be used
5:3
MAX_LNA_GAIN[2:0]
0 (000)
R/W
Sets t
he maximum allowable LNA + LNA 2 gain relative to the
maximum possible gain.
Setting
Maximum allowable LNA + LNA 2 gain
0 (000)
Maximum possible LNA + LNA 2 gain
1 (001)
Approx. 2.6 dB below maximum possible gain
2 (010)
Approx. 6.1 dB below maximum po
ssible gain
3 (011)
Approx. 7.4 dB below maximum possible gain
4 (100)
Approx. 9.2 dB below maximum possible gain
5 (101)
Approx. 11.5 dB below maximum possible gain
6 (110)
Approx. 14.6 dB below maximum possible gain
7 (111)
Approx. 17.1 dB below max
imum possible gain
2:0
MAGN_TARGET[2:0]
3 (011)
R/W
These bits set the target value for the averaged amplitude from
the digital channel filter (1 LSB = 0 dB).
Setting
Target amplitude from channel filter
0 (000)
24 dB
1 (001)
27 dB
2 (010)
30 dB
3
(011)
33 dB
4 (100)
36 dB
5 (101)
38 dB
6 (110)
40 dB
7 (111)
42 dB