CC2430 Datasheet, PDF (191/212 Pages) Texas Instruments – A True System-on-Chip solution for 2.4 GHz IEEE 802.15.4 / ZigBee-TM

Radio : Radio Registers
CC2430
RXCTRL1H (0xDF0E)
Bit Name
7:6 -
5 RXBPF_LOCUR
4 RXBPF_MIDCUR
3 LOW_LOWGAIN
2 MED_LOWGAIN
1 HIGH_HGM
0 MED_HGM
RXCTRL1L (0xDF0F)
Bit Name
7:6 LNA_CAP_ARRAY[1:0]
5:4 RXMIX_TAIL[1:0]
3:2 RXMIX_VCM[1:0]
1:0 RXMIX_CURRENT[1:0]
Reset
0
1
0
1
0
1
0
Reset
01
01
01
10
R/W
R0
R/W
R/W
R/W
R/W
R/W
R/W
Description
Reserved, read as 0.
Controls reference bias current to RX band-pass filters:
0 : 4 uA
1 : 3 uA (Default)
Controls reference bias current to RX band-pass filters:
0 : 4 uA (Default)
1 : 3.5 uA
LNA low gain mode setting in AGC low gain mode.
LNA low gain mode setting in AGC medium gain mode.
RX Mixers high gain mode setting in AGC high gain mode.
RX Mixers high gain mode setting in AGC medium gain
mode.
R/W
R/W
R/W
R/W
R/W
Description
Selects varactor array setting in the LNA
00 : OFF
01 : 0.1 pF (x2) (Nominal)
10 : 0.2 pF (x2)
11 : 0.3 pF (x2)
Control of the receiver mixers output current.
00 : 12 µA
01 : 16 µA (Nominal)
10 : 20 µA
11 : 24 µA
Controls VCM level in the mixer feedback loop
00 : 8 µA mixer current
01 : 12 µA mixer current (Nominal)
10 : 16 µA mixer current
11 : 20 µA mixer current
Controls current in the mixer
00 : 360 µA mixer current (x2)
01 : 720 µA mixer current (x2)
10 : 900 µA mixer current (x2) (Nominal)
11 : 1260 µA mixer current (x2)
CC2430 Data Sheet (rev. 2.1) SWRS036F
Page 191 of 211