CC2420 Datasheet, PDF (66/87 Pages) List of Unclassifed Manufacturers – 2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver

SmartRF ^® CC2420
RXCTRL0 (0x16) – Receive control register 0
Bit
15:14
13:12
11:10
9:8
7:6
5:4
3:2
1:0
Field Name
-
RXMIXBUF_CUR[1:0]
Reset
0
1
HIGH_LNA_GAIN[1:0]
0
MED_LNA_GAIN[1:0]
2
LOW_LNA_GAIN[1:0]
3
HIGH_LNA_CURRENT[1:0] 2
MED_LNA_CURRENT[1:0] 1
LOW_LNA_CURRENT[1:0] 1
R/W
W0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Reserved, write as 0.
RX mixer buffer bias current.
0: 690uA
1: 980uA (nominal)
2: 1.16mA
3: 1.44mA
Controls current in the LNA gain compensation branch in AGC
High gain mode.
0: Compensation disabled
1: 100 µA compensation current
2: 300 µA compensation current (Nominal)
3: 1000 µA compensation current
Controls current in the LNA gain compensation branch in AGC
Med gain mode.
Controls current in the LNA gain compensation branch in AGC
Low gain mode
Controls main current in the LNA in AGC High gain mode
0: 240 µA LNA current (x2)
1: 480 µA LNA current (x2)
2: 640 µA LNA current (x2)
3: 1280 µA LNA current (x2)
Controls main current in the LNA in AGC Med gain mode
Controls main current in the LNA in AGC Low gain mode
Chipcon AS SmartRF^® CC2420 Preliminary Datasheet (rev 1.2), 2004-06-09
Page 66 of 87