AD9633 datasheet(37/42 Pages) AD

37 / 42 page

AD9633

Data Sheet

Rev. B | Page 36 of 41

Addr

(Hex)

Parameter

Name

Bit 7

(MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSB)

Default

Value

(Hex)

Comments

0x21

Serial output

data control

(global)

LVDS

output

LSB

first

SDR/DDR one-lane/two-lane,

bitwise/bytewise[6:4]

000 = SDR two-lane, bitwise

001 = SDR two-lane, bytewise

010 = DDR two-lane, bitwise

011 = DDR two-lane, bytewise

100 = DDR one-lane

Open

Select 2×

frame

Serial output

number of bits

10 = 12 bits

11 = 10 bits

0x32

Serial stream

control. Default

causes MSB first

and the native

bit stream.

0x22

Serial channel

status (local)

Open

Channel

output

reset

Channel

power-

down

0x00

Used to power

down individual

sections of a

converter.

0x100

Resolution/

sample rate

override

Open

Resolution/

sample rate

override

enable

Resolution

10 = 12 bits

11 = 10 bits

Open

Sample rate

000 = 20 MSPS

001 = 40 MSPS

010 = 50 MSPS

011 = 65 MSPS

100 = 80 MSPS

101 = 105 MSPS

110 = 125 MSPS

0x00

Resolution/

sample rate

override

(requires

transfer

0xFF).

0x101

User I/O Control 2

Open

SDIO

pull-

down

0x00

Disables SDIO

pull-down.

0x102

User I/O Control 3

Open

VCM

power-

down

Open

0x00

VCM control.

0x109

Sync

Open

Sync

only

Enable

sync

0x00

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