CC2400_07 Datasheet, PDF (69/83 Pages) Texas Instruments – 2.4 GHz Low-Power RF Transceiver

CC2400
AGCTST0 (0x17) - AGC Test Register 0
Bit
Field Name
Reset R/W
15:13 AGC_SETTLE_BLANK_DN[2: 4
R/W
0]
12:11 AGC_WIN_SIZE[1:0]
2
R/W
10:7
AGC_SETTLE_PEAK[3:0]
2
R/W
6:3
AGC_SETTLE_ADC[3:0]
2
R/W
2:0
AGC_ATTEMPTS[2:0]
0
R/W
Description
AGC blanking enable/limit for negative gain changes.
0: Disabled
1-7: Duration of blanking signal in 8 MHz clock cycles.
AGC window size.
AGC peak detectors settling period.
AGC ADC settling period.
The maximum number of attempts to set the gain.
AGCTST1 (0x18) - AGC Test Register 1
Bit
15
14
Field Name
-
AGC_VAR_GAIN_SAT
Reset R/W
0
W0
1
R/W
13:11 AGC_SETTLE_BLANK_UP
0
R/W
[2:0]
10
PEAKDET_CUR_BOOST
0
R/W
9:6
AGC_MULT_SLOW[3:0]
0
R/W
5:2
AGC_SETTLE_FIXED[3:0] 4
R/W
1:0
AGC_SETTLE_VAR[1:0]
0
R/W
Description
Reserved, write as 0.
Chooses the gain reduction upon saturation of the variable
gain stage:
0: -1/-3 gain steps
1: -3/-5 gain steps
AGC blanking enable/limit for positive gain changes.
0: Disabled
1-7: Duration of blanking signal in 8 MHz clock cycles.
Doubles the bias current in the peak-detectors in-between the
VGA stages when set.
AGC timing multiplier, slow mode.
AGC settling period, fixed gain step.
AGC settling period, variable gain step.
AGCTST2 (0x19) - AGC Test Register 1
Bit
Field Name
Reset R/W
15:14 -
0
W0
13:12 AGC_BACKEND_BLANKING 0
R/W
[1:0]
11:9
AGC_ADJUST_M3DB[2:0] 0
R/W
8:6
AGC_ADJUST_M1DB[2:0] 0
R/W
5:3
AGC_ADJUST_P3DB[2:0] 0
R/W
2:0
AGC_ADJUST_P1DB[2:0] 0
R/W
Description
Reserved, write as 0.
AGC blanking makes sure that the modem locks its bit
synchronization and centre frequency estimator when the AGC
changes the gain.
0: Disabled
1-3: Fixed/variable enable
AGC parameter -3 dB.
AGC parameter -1 dB.
AGC parameter +3 dB.
AGC parameter +1 dB.
SWRS042A
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