Texas Instruments CC253x User Manual

www.ti.com Registers
AGCCTRL1 (0x61B2) – AGC Reference Level
Bit Name Reset R/W Description
No.
7:6 – 00 R0 Reserved. Read as 0
5:0
AGC_REF[5:0]
01 0001 R/W Target value for the AGC control loop, given in 1-dB steps. For the best value
to use see Table 23-6 in Section 23.15.1.
AGCCTRL2 (0x61B3) – AGC Gain Override
Bit Name Reset R/W Description
No.
7:6
LNA1_CURRENT[1:0]
00 R*/W
Overrride value for LNA 1. Only used when LNA_CURRENT_OE = 1. When read,
this register returns the current applied gain setting.
00: 0-dB gain (reference level)
01: 3-dB gain
10: Reserved
11: 6-dB gain
5:3
LNA2_CURRENT[2:0]
000 R*/W
Overrride value for LNA 2. Only used when LNA_CURRENT_OE = 1. When read,
this register returns the current applied gain setting.
000: 0-dB gain (reference level)
001: 3-dB gain
010: 6-dB gain
011: 9-dB gain
100: 12-dB gain
101: 15-dB gain
110: 18-dB gain
111: 21-dB gain
2:1
LNA3_CURRENT[1:0]
00 R*/W
Overrride value for LNA 3. Only used when LNA_CURRENT_OE = 1. When read,
this register returns the current applied gain setting.
00: 0-dB gain (reference level)
01: 3-dB gain
10: 6-dB gain
11: 9-dB gain
0
LNA_CURRENT_OE
0 R/W Write 1 to override the AGC LNA current setting with the values above
(LNA1_CURRENT, LNA2_CURRENT, and LNA3_CURRENT).
AGCCTRL3 (0x61B4) – AGC Control
Bit Name Reset R/W Description
No.
7 – 0 R0 Reserved. Read as 0
6:5
AGC_SETTLE_WAIT[1:0]
01 R/W Time for AGC to wait for analog gain to settle after a gain change. During this
period, the energy measurement in the AGC is paused.
00: 15 periods
01: 20 periods
10: 25 periods
11: 30 periods
4:3
AGC_WIN_SIZE[1:0]
01 R/W Window size for the accumulate and dump function in the AGC
00: 16 samples
01: 32 samples
10: 64 samples
11: 128 samples
2:1
AAF_RP[1:0]
11 R*/W
Overrides the AGC control signals to AAF when AAF_RP_OE = 1. When read, it
returns the applied signal to the AAF.
00: 9-dB attenuation in AAF
01: 6-dB attenuation in AAF
10: 3-dB attenuation in AAF
11: 0-dB attenuation in AAF (reference level)
0
AAF_RP_OE
0 R/W
Write 1 to override the AGC AAF control signals with the values stored in AAF_RP.
279
SWRU191C–April 2009–Revised January 2012 CC253x Radio
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Texas Instruments CC253x Specifications

General

Brand	Texas Instruments
Model	CC253x
Category	Microcontrollers
Language	English