AD9652BBCZ-310 datasheet(35/37 Pages) AD

35 / 37 page

AD9652

Data Sheet

Rev. B | Page 34 of 36

Addr

(Hex)

Name

Bit 7

(MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSB)

Default

Value

(Hex)

Default

Notes/

Comments

0x45

Fast detect

(FD) control

Enable

fast

detect

output

0x00

0x47

FD upper

threshold

Fast Detect Upper Threshold[3:0]

Valid programming range = 0x1 to 0x8

Threshold = midscale ± (register value) × (1/8) ×

(full scale)

0x08

0x49

FD lower

threshold

Fast Detect Lower Threshold[7:0]

0x00

0x4A

FD lower

threshold

Fast Detect Lower Threshold[14:8]

0x02

0x4B

FD dwell

time

Fast Detect Dwell Time[7:0]

0x00

0x4C

FD dwell

time

Fast Detect Dwell Time[15:8]

0x08

0x100

SYNC

control

(global)

Clock

divider

next SYNC

only

Clock

divider

SYNC

enable

Master

SYNC

buffer

enable

0x00

0x212

Dither gain

(global)

0b0000: 100% dither applied

0b0001: 99.6% dither applied

0b0010: 99.2% dither applied

0b0011: 98.4% dither applied

0b0100: 96.8% dither applied

0b0101: 93.75% dither applied

0b0110: 87.5% dither applied

0b0111: 75% dither applied

0b1000: 50% dither applied

Reserved,

set to 0

Reserved,

set to 0

Reserved,

set to 0

Reserved,

set to 0

0x08

0x22A

Input

frequency

settings

(global)

0: fIN in 1st Nyquist

1: fIN in 2nd Nyquist

2: fIN in 3rd Nyquist or

higher

0x00

0x4FA

Calibration

power-

down

config-

uration

(global)

Reserved,

set to 0

Reserved,

set to 0

Reserved,

set to 0

Reserved,

set to 0

Reserved,

set to 0

Reserved,

set to 0

Power down/standby

initial calibration

action:

0b00: use previous

calibration correction

0b11: initiate a fast

calibration

0x03

0x4FB

Calibration

power-down

configura-

tion (global)

Reserved,

set to 0

Reserved,

set to 0

Reserved,

set to 0

Reserved,

set to 0

Reserved,

set to 1

Reset

back-

ground

calibration,

set high

then low

Reserved,

set to 0

Pause

back-

ground

calibration

0x08

Set the channel index register at Address 0x05to 0x03 (default)whenwriting to Address 0x00.

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