AD9857AST Analog Devices Inc, AD9857AST Datasheet - Page 29

• Manufacturer Part Number: AD9857AST
• Description: IC QUADRATURE DGTL UPCONV 80LQFP
• Manufacturer: Analog Devices Inc
• Series: AD9857r

Specifications of AD9857AST

• Rohs Status: RoHS non-compliant
• Function: Upconverter
• Frequency: 5MHz ~ 200MHz
• Rf Type: HFC Cable Network
• Package / Case: 80-LQFP

Table 8. Control Register Quick Reference
Register
Address
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
(MSB)
Bit 7
CIC Clear
SDIO Input Only
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>
0
0
0
0
, LSB = 2
, LSB = 2
, LSB = 2
, LSB = 2
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Bit 4
Reserved
–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
Invert
Spectral
Invert
Spectral
Invert
Spectral
Invert
(LSB)
Bit 0
Inverse
CIC
Bypass
Inverse
CIC
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
2
2
2
3
3
1
1
2
2
2
3
3
3
3