CC2420-RTR1 datasheet(76/92 Pages) TI

76 / 92 page

CC2420

SWRS041B

Page 76 of 89

AGCTST0 (0x24) - AGC Test Register 0

Bit

Field Name

Reset

R/W

Description

15:12

LNAMIX_HYST[3:0]

R/W

Hysteresis on the switching between different RF front-end

gain modes, defined in 2 dB steps

11:6

LNAMIX_THR_H[5:0]

R/W

Threshold for switching between medium and high RF front-

end gain mode, defined in 2 dB steps

5:0

LNAMIX_THR_L[5:0]

R/W

Threshold for switching between low and medium RF front-end

gain mode, defined in 2 dB steps

AGCTST1 (0x25) - AGC Test Register 1

Bit

Field Name

Reset

R/W

Description

Reserved, write as 0

AGC_BLANK_MODE

R/W

Set the VGA blanking mode when switching out a gain stage

When VGA_GAIN_OE = 0:

0 : Blanking is performed when the AGC algorithm switches

out one or more 14dB gain stages.

1 : Blanking is never performed.

When VGA_GAIN_OE = 1:

Blanking is performed when AGC_BLANK_MODE=1

PEAKDET_CUR_BOOST

R/W

Doubles the bias current in the peak-detectors in-between the

VGA stages when set.

12:11

AGC_SETTLE_WAIT[1:0]

R/W

Timing for AGC to wait for analog gain to settle.

10:8

AGC_PEAK_DET_MODE

[2:0]

R/W

Sets the AGC mode for use of the VGA peak detectors:

Bit 2 : Digital ADC peak detector enable / disable

Bit 1 : Analog fixed stages peak detector enable /

disable

Bit 0 : Analog variable gain stage peak detector enable /

disable

7:6

AGC_WIN_SIZE[1:0]

R/W

Window size for the accumulate and dump function in the

AGC.

0 : 8 samples

1 : 16 samples

2 : 32 samples

3 : 64 samples

5:0

AGC_REF[5:0]

R/W

Target value for the AGC control loop, given in 2 dB steps.

Reset value corresponds to approximately 25% of the ADC

dynamic range in reception.

AGCTST2 (0x26) - AGC Test Register 2

Bit

Field Name

Reset

R/W

Description

15:10

Reserved, write as 0

9:5

MED2HIGHGAIN[4:0]

R/W

MED2HIGHGAIN sets the difference in the receiver

LNA/MIXER gain from medium gain mode to high gain mode,

used by the AGC for setting the correct front-end gain mode.

4:0

LOW2MEDGAIN[4:0]

R/W

LOW2MEDGAIN sets the difference in the receiver

LNA/MIXER gain from low gain mode to medium gain mode,

used by the AGC for setting the correct front-end gain mode.

CC2420-RTR1 数据表(PDF) 76 Page - Texas Instruments

CC2420-RTR1 数据表(HTML) 76 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92

数据表下载

链接网址

CC2420-RTR1 数据表(PDF) 76 Page - Texas Instruments

CC2420-RTR1 数据表(HTML) 76 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92

数据表 下载

链接网址

数据表下载