CC2420-RTR1 datasheet(75/92 Pages) TI

75 / 92 page

CC2420

SWRS041B

Page 75 of 89

MANOR (0x22) - Manual signal OR override register

Bit

Field Name

Reset

R/W

Description

VGA_RESET_N

R/W

The VGA_RESET_N signal is used to reset the peak detectors in

the VGA in the RX chain.

BIAS_PD

R/W

Global Bias power down (1)

BALUN_CTRL

R/W

The BALUN_CTRL signal controls whether the PA should receive

its required external biasing (1) or not (0) by controlling the

RX/TX output switch.

RXTX

R/W

RXTX signal: controls whether the LO buffers (0) or PA buffers

(1) should be used.

PRE_PD

R/W

Powerdown of prescaler.

PA_N_PD

R/W

Powerdown of PA (negative path).

PA_P_PD

R/W

Powerdown of PA (positive path). When PA_N_PD=1 and

PA_P_PD=1 the up-conversion mixers are in powerdown.

DAC_LPF_PD

R/W

Powerdown of TX DACs.

XOSC16M_PD

RXBPF_CAL_PD

R/W

Powerdown control of complex bandpass receive filter calibration

oscillator.

CHP_PD

R/W

Powerdown control of charge pump.

FS_PD

R/W

Powerdown control of VCO, I/Q generator, LO buffers.

ADC_PD

R/W

Powerdown control of the ADCs.

VGA_PD

R/W

Powerdown control of the VGA.

RXBPF_PD

R/W

Powerdown control of complex bandpass receive filter.

LNAMIX_PD

R/W

Powerdown control of LNA, down-conversion mixers and front-

end bias.

AGCCTRL (0x23) - AGC Control

Bit

Field Name

Reset

R/W

Description

15:12

Reserved, write as 0

VGA_GAIN_OE

R/W

Use the VGA_GAIN value during RX instead of the AGC value.

10:4

VGA_GAIN [6:0]

0x7F

R/W

When written, VGA manual gain override value; when read, the

currently used VGA gain setting.

3:2

LNAMIX_GAINMODE_O

[1:0]

R/W

LNA / Mixer Gain mode override setting

0 : Gain mode is set by AGC algorithm

1 : Gain mode is always low-gain

2 : Gain mode is always med-gain

3 : Gain mode is always high-gain

1:0

LNAMIX_GAINMODE

[1:0]

Status bit, defining the currently selected gain mode selected by

the AGC or overridden by the LNAMIX_GAINMODE_O setting.

CC2420-RTR1 数据表(PDF) 75 Page - Texas Instruments

CC2420-RTR1 数据表(HTML) 75 Page - Texas Instruments

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