CC2420 Chipcon AS, CC2420 Datasheet - Page 65

• Manufacturer Part Number: CC2420
• Description: 2.4 GHz RF Transceiver for IEEE 802.15.4 and ZigBee
• Manufacturer: Chipcon AS

RXCTRL0 (0x16) – Receive control register 0
15:14
13:12
11:10
9:8
7:6
5:4
3:2
1:0
Chipcon AS SmartRF ® CC2420 Preliminary Datasheet (rev 1.0), 2003-11-17
Bit
Field Name
-
RXMIXBUF_CUR[1:0]
HIGH_LNA_GAIN[1:0]
MED_LNA_GAIN[1:0]
LOW_LNA_GAIN[1:0]
HIGH_LNA_CURRENT[1:0]
MED_LNA_CURRENT[1:0]
LOW_LNA_CURRENT[1:0]
1
0
2
3
2
1
1
Reset
0
R/W
W0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
SmartRF
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
®
CC2420
Page 65 of 85