AD9857 Analog Devices, AD9857 Datasheet - Page 23

• Manufacturer Part Number: AD9857
• Description: CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter
• Manufacturer: Analog Devices

Reg
Addr
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
Bit 7
(MSB)
SDIO
Input
Only
CIC
Clear
Bit 6
LSB
First
Inverse
SINC
Bypass
CIC Interpolation Rate
01h: Bypass CIC Filter
02h–3Fh: Interpolation Factor (2–63, Decimal)
Output Scale Factor
Bit Weighting: MSB = 2
CIC Interpolation Rate
01h: Bypass CIC Filter
02h–3Fh: Interpolation Factor (2–63, Decimal)
Output Scale Factor
Bit Weighting: MSB = 2
CIC Interpolation Rate
01h: Bypass CIC Filter
02h–3Fh: Interpolation Factor (2–63, Decimal)
Output Scale Factor
Bit Weighting: MSB = 2
CIC Interpolation Rate
01h: Bypass CIC Filter
02h–3Fh: Interpolation Factor (2–63, Decimal)
Output Scale Factor
Bit Weighting: MSB = 2
Bit 5
PLL
Lock
Control
Reserved:
Must Be 0
Frequency Tuning Word #1 <7:0>
Frequency Tuning Word #1 <15:8>
Frequency Tuning Word #1 <23:16>
Frequency Tuning Word #1 <31:24>
Frequency Tuning Word #2 <7:0>
Frequency Tuning Word #2 <15:8>
Frequency Tuning Word #2 <23:16>
Frequency Tuning Word #2 <31:24>
Frequency Tuning Word #3 <7:0>
Frequency Tuning Word #3 <15:8>
Frequency Tuning Word #3 <23:16>
Frequency Tuning Word #3 <31:24>
Frequency Tuning Word #4 <7:0>
Frequency Tuning Word #4 <15:8>
Frequency Tuning Word #4 <23:16>
Frequency Tuning Word #4 <31:24>
Table IV. Control Register Quick Reference
0
0
0
0
Bit 4
Reserved
, LSB = 2
, LSB = 2
, LSB = 2
, LSB = 2
–7
–7
–7
–7
Bit 3
REFCLK Multiplier
01h: Bypass PLL
04h–14h: 4 –20
Full
Sleep
Bit 2
Auto
Power-
Down
Bit 1
Operating Mode
00h: Quad. Mod.
01h: Single-Tone
02h: Intrp. DAC
Spectral
Spectral
Spectral
Spectral
Invert
Invert
Invert
Invert
Bit 0
(LSB)
Inverse
CIC
Bypass
Inverse
CID
Bypass
Inverse
CIC
Bypass
Inverse
CIC
Bypass
Def.
Value
21h
00h
00h
00h
00h
00h
08h
B5h
Unset
Unset
Unset
Unset
Unset
Unset
Unset
Unset
Unset
Unset
Unset
Unset
Unset
Unset
Unset
Unset
Unset
Unset
AD9857
Profile
N/A
N/A
0
0
0
0
0
0
1
1
1
1
1
1
2
2
2
2
2
2
3
3
3
3
3
3