Texas Instruments 3138 155 232931 - Manual (Page 67)

CC2420
SWRS041B Page 67 of 89
RXCTRL0 (0x16) – Receive control register 0
Bit Field Name Reset R/W Description
15:14 - 0 W0 Reserved, write as 0.
13:12 RXMIXBUF_CUR[1:0] 1 R/W RX mixer buffer bias current.
0: 690uA
1: 980uA (nominal)
2: 1.16mA
3: 1.44mA
11:10 HIGH_LNA_GAIN[1:0] 0 R/W 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
9:8 MED_LNA_GAIN[1:0] 2 R/W Controls current in the LNA gain compensation branch in AGC
Med gain mode.
7:6 LOW_LNA_GAIN[1:0] 3 R/W Controls current in the LNA gain compensation branch in AGC
Low gain mode
5:4 HIGH_LNA_CURRENT[1:0] 2 R/W 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)
3:2 MED_LNA_CURRENT[1:0] 1 R/W Controls main current in the LNA in AGC Med gain mode
1:0 LOW_LNA_CURRENT[1:0] 1 R/W Controls main current in the LNA in AGC Low gain mode