AD9953-PCB Analog Devices, Inc., AD9953-PCB Datasheet - Page 14

• Manufacturer Part Number: AD9953-PCB
• Description: 400 Msps 14-bit, 1.8v Cmos Direct Digital Synthesizer
• Manufacturer: Analog Devices, Inc.

AD9953
Table 5. Register Map
Register
Name
(Serial
Address)
No. 2 (CFR2)
Scale Factor
Offset Word
Amplitude
Amplitude
Ramp Rate
Frequency
Frequency
Function
Function
Register
Register
Control
Control
(POW0)
Tuning
(FTW0)
Tuning
(FTW1)
(CFR1)
(0x00)
(0x01)
(0x02)
(0x03)
(0x04)
(0x05)
(0x06)
Phase
(ARR)
Word
Word
(ASF)
No.1
Bit
Range
<23:16>
<31:24>
<23:16>
<23:16>
<31:24>
<23:16>
<31:24>
<15:8>
<15:8>
<15:8>
<15:8>
<15:8>
<15:8>
<7:0>
<7:0>
<7:0>
<7:0>
<7:0>
<7:0>
<7:0>
(MSB)
Bit 7
Automatic
Auto Ramp Rate Speed
Load SRR
@ I/O UD
Power-
Digital
Enable
Enable
Down
Sync
RAM
Not Used<1:0>
Control <1:0>
0x00 or 0x01, or 0x02 or 0x03: Bypass Multiplier
0x04 to 0x14: 4× to 20× Multiplication
Bit 6
Software
AutoClr
Accum.
Manual
Power-
Dest. Is
Comp
Down
Phase
Word
Freq.
Sync
RAM
Not Used
REFCLK Multiplier
Bit 5
AutoClr
Accum.
Power-
Sweep
Enable
Linear
Down
Phase
DAC
Internal Profile Control <2:0>
Frequency Tuning Word No. 0 <23:16>
Frequency Tuning Word No. 0 <31:24>
Frequency Tuning Word No. 1 <23:16>
Frequency Tuning Word No. 1 <31:24>
Amplitude Scale Factor Register <7:0>
Frequency Tuning Word No. 0 <15:8>
Frequency Tuning Word No. 1 <15:8>
Amplitude Ramp Rate Register <7:0>
Frequency Tuning Word No. 0 <7:0>
Frequency Tuning Word No. 1 <7:0>
Rev. 0 | Page 14 of 32
Phase Offset Word No. 0 <7:0>
Bit 4
Clock Input
Not Used
Output
Power-
Enable
Down
SINE
Amplitude Scale Factor Register <13:8>
Not Used
Phase Offset Word No. 0 <13:8>
Bit 3
Not Used
External
Accum.
Power-
Down
Mode
Enable
Clear
Freq.
Speed
High
Sync
Bit 2
VCO Range
Sweep No
Hardware
Load ARR
Not Used
@ I/O UD
Accum.
Manual
Enable
Linear
Phase
Dwell
Clear
Sync
Bit 1
SYNC_CLK
Charge Pump Current
Not Used
CRYSTAL
OUT Pin
Disable
Enable
Active
Input
SDIO
Only
OSK
Out
<1:0>
(LSB)
Bit 0
LSB First
Keying
Used
Used
Auto
Used
OSK
Not
Not
Not
Default
Value
OR
Profile
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00