AD9674KBCZ datasheet(44/48 Pages) AD

44 / 48 page

Data Sheet

AD9674

Rev. A | Page 43 of 47

Addr.

(Hex) RegisterName

Bit 7 (MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0 (LSB)

Default

Value Comments

0x02D CW_ENABLE_

PHASE

CW Doppler

channel

enable:

0 = off

(default),

1 = on

I/Q demodulator phase:

0000 = 0° (default),

0001 = 22.5° (not valid for 4LO mode),

0010 = 45°,

0011 = 67.5° (not valid for 4LO mode),

0100 = 90°,

0101 = 112.5° (not valid for 4LO mode),

0110 = 135°,

0111 = 157.5° (not valid for 4LO mode),

1000 = 180°,

1001 = 202.5° (not valid for 4LO mode),

1010 = 225°,

1011 = 247.5° (not valid for 4LO mode),

1100 = 270°,

1101 = 292.5° (not valid for 4LO mode),

1110 = 315°,

1111 = 337.5° (not valid for 4LO mode)

0x00

Phase of demodulators

(local, chip).

0x02E CW_LO_MODE

Partially enable

LVDS during CW

0: LVDS link

disabled during CW

(default),

1: LVDS link partially

enabled during CW,

PLL,FCO,and DCO

are enabled, while

LVDS data drivers

are disabled

(switching activity

can degrade CW

performance)

RESET± with

MLO± clock

edge:

0 = synchro-

nous

(default),

1 = asynchro-

nous

Synchro-

nous

RESET±

sampling

MLO±

clock edge:

0 = falling

(default),

1 = rising

RESET±

signal

polarity:

0 = active

high

(default),

1 = active

low

MLO± and

RESET±

buffer enable

(in all modes

except

CWmode):

0 = power

down

(default),

1 = enable

LO mode

00X = 4LO, third to fifth odd

harmonic rejection

(default)

010 = 8LO, third to fifth odd

harmonic rejection

011 = 8LO, third to 13th odd

harmonic rejection

100 = 16LO, third to fifth odd

harmonic rejection

101 = 16LO, third to 13th odd

harmonic rejection

11X = reserved

0x00

CW mode functions

(global).

0x02F CW_OUTPUT

CW output dc bias

voltage:

0 = bypass,

1 = enable (default)

0x80

CW dc voltage output

control (global).

0x102 RESERVED_102

0x00

Reserved.

0x103 RESERVED_103

0x00

Reserved.

0x104 RESERVED_104

0x3F

Reserved.

0x105 RESERVED_105

0x00

Reserved.

0x106 RESERVED_106

0x00

Reserved.

0x107 RESERVED_107

Read

only

Reserved.

0x108 RESERVED_108

0x00

Reserved.

0x109 VGA_TEST

VGA/AAF

test mode

enable:

0 = off

(default),

1 = on

VGA/AAF output test mode:

000 = Channel A (default),

001 = Channel B,

010 = Channel C,

011 = Channel D,

100 = Channel E,

101 = Channel F,

110 = Channel G,

111 = Channel H

0x00

VGA/AAF test mode,

enables AAF output to

GPO2 and GPO3 pins

(global).

0x10C PROFILE_INDEX

Manual

TX_TRIG:

0 = off,

use pin

(default),

1 = on,

auto

generate

TX_TRIG

(self clears)

Profile index, Bits[4:0]

0x00

Index for profile memory;

selects active profile

(global).

0x10D RESERVED_10D

0xFF

Reserved.

0x10E RESERVED_10E

0xFF

Reserved.

0x10F DIG_OFFSET_CAL

Digital offset

calibration

status:

0 = not

complete

(default),

1 = complete

Digital offset calibration:

000= disable correction, reset

correction value (default),

001 = average 210 samples,

010 = average 211 samples,

…,

111 = average 216 samples

0x00

Controls digital offset

calibration enable and

number of samples used

(global).

AD9674KBCZ Datasheet(PDF) 44 Page - Analog Devices

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