AD9953YSVZ Datasheet, PDF(14/32 Page) Analog Devices – 400 MSPS, 14-Bit, 1.8 V CMOS Direct Digital Synthesizer

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AD9953YSVZ Datasheet, PDF (14/32 Pages) Analog Devices – 400 MSPS, 14-Bit, 1.8 V CMOS Direct Digital Synthesizer

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AD9953

Table 5. Register Map

Name

(Serial

Address)

Bit

Range

<7:0>

Control

Function

No.1

(CFR1)

(0x00)

<15:8>

<23:16>

<31:24>

Control

Function

No. 2 (CFR2)

(0x01)

<7:0>

<15:8>

Amplitude

Scale Factor

(ASF)

(0x02)

Amplitude

Ramp Rate

(ARR)

(0x03)

Frequency

Tuning

Word

(FTW0)

(0x04)

Phase

Offset Word

(POW0)

(0x05)

Frequency

Tuning

Word

(FTW1)

(0x06)

<23:16>

<7:0>

<15:8>

<7:0>

<15:8>

<23:16>

<31:24>

<7:0>

<15:8>

<7:0>

<15:8>

<23:16>

<31:24>

(MSB)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Digital

Power-

Down

Comp

Power-

Down

DAC

Power-

Down

Clock Input

Power-

Down

External

Power-

Down

Mode

Linear

Sweep No

Dwell

Load SRR

@ I/O UD

AutoClr

Freq.

Accum.

AutoClr

Phase

Accum.

Enable

SINE

Output

Clear

Freq.

Accum.

Clear

Phase

Accum.

Automatic

Sync

Enable

Software

Manual

Sync

Linear

Sweep

Enable

Not Used Not Used Not Used

RAM

Enable

RAM

Dest. Is

Phase

Word

Internal Profile Control <2:0>

Load ARR

@ I/O UD

REFCLK Multiplier

0x00 or 0x01, or 0x02 or 0x03: Bypass Multiplier

0x04 to 0x14: 4Ã to 20Ã Multiplication

VCO Range

Not Used

High

Speed

Sync

Enable

Hardware

Manual

Sync

Enable

Not Used

Amplitude Scale Factor Register <7:0>

Bit 1

(LSB)

Bit 0

SYNC_CLK

Out

Disable

Not

Used

SDIO

Input

Only

LSB First

Not Used

Not

Used

OSK

Enable

Auto

OSK

Keying

Charge Pump Current

<1:0>

CRYSTAL

OUT Pin

Active

Not

Used

Auto Ramp Rate Speed

Control <1:0>

Amplitude Scale Factor Register <13:8>

Not Used<1:0>

Amplitude Ramp Rate Register <7:0>

Frequency Tuning Word No. 0 <7:0>

Frequency Tuning Word No. 0 <15:8>

Frequency Tuning Word No. 0 <23:16>

Frequency Tuning Word No. 0 <31:24>

Phase Offset Word No. 0 <7:0>

Phase Offset Word No. 0 <13:8>

Frequency Tuning Word No. 1 <7:0>

Frequency Tuning Word No. 1 <15:8>

Frequency Tuning Word No. 1 <23:16>

Frequency Tuning Word No. 1 <31:24>

Default

Value

Profile

0x00

0x18

0x00

Rev. A | Page 14 of 32

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