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AD9956/PCB датащи(PDF) 24 Page - Analog Devices

номер детали AD9956/PCB
подробное описание детали  2.7 GHz DDS-Based AgileRF
PDF  32 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD9956/PCB датащи(HTML) 24 Page - Analog Devices

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AD9956
Rev. 0 | Page 24 of 32
REGISTER MAP AND DESCRIPTION
Table 5.
Register
Name
(Serial
Address)
Bit
Range
(MSB) Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(LSB)
Default
Value/
Profile
<31:24>
Open1
Open1
Open1
Open1
Open1
Open1
Open1
PLL Lock
Error
0x00
<23:16>
LOAD SRR @
I/O_UPDATE
Auto-Clr
Frequency
Accum.
Auto-
Clr
Phase
Accum.
Enable
Sine
Output
Clear
Frequency
Accum.
Clear
Phase
Accum.
Linear
Sweep
Enable
Linear
Sweep
No Dwell
0x00
<15:8>
LSB First
SDI/O
Input
Only
Open1
Open1
Open1
Open1
Open1
Open1
0x00
Control
Function
Register 1
(CFR1)
(0x00)
<7:0>
Digital
Power-
Down
PFD Input
Power-
Down
PLLREF
Crystal
Enable
SYNC_CLK
Disable
Auto Sync
Multiple
AD9956s
Software
Manual
Sync
Hardware
Manual
Sync
High
Speed
Sync
Enable
0x00
<39:32>
DAC
Power-
Down
Open1
Open1
Open1
Open1
Open1
Internal
Band Gap
Power-
Down
Internal
CML
Driver
DRV_RSET
0x00
<31:24>
Clock Driver Rising Edge <31:29>
Clock Driver Falling Edge Control
<28:26>
PLL Lock
Detect
Enable
PLL Lock
Detect
Mode
0x00
<23:16>
RF Divider
Power-
Down
RF Divider Ratio
<22:21>
Clock
Driver
Power-
Down
Clock Driver Input
Select <19:18>
Slew Rate
Control
RF Div
REFCLK
Mux Bit
0x78
<15:8>
Divider M Control <15:12>
Divider N Control <11:8>
0x00
Control
Function
Register 2
(CFR2)
(0x01)
<7:0>
Open1
Open1
CP
Polarity
CP
Full PD
CP
Quick PD
CP Current Scale <2:0>
0x07
<23:16>
Rising Delta Frequency Tuning Word <23:16>
0x00
<15:8>
Rising Delta Frequency Tuning Word <15:8>
0x00
Rising Delta
Frequency
Tuning
Word
(RDFTW)
(0x02)
<7:0>
Rising Delta Frequency Tuning Word <7:0>
0x00
<23:16>
Falling Delta Frequency Tuning Word <23:16>
0x00
<15:8>
Falling Delta Frequency Tuning Word <15:8>
0x00
Falling Delta
Frequency
Tuning
Word
(FDFTW)
(0x03)
<7:0>
Falling Delta Frequency Tuning Word <7:0>
0x00
<15:8>
Rising Sweep Ramp Rate <15:8>
0x00
Rising
Sweep
Ramp Rate
(RSRR)
(0x04)
<7:0>
Rising Sweep Ramp Rate <7:0>
0x00
<15:8>
Rising Sweep Ramp Rate <15:8>
0x00
Falling
Sweep
Ramp Rate
(FSRR)
(0x05)
<7:0>
Rising Sweep Ramp Rate <7:0>
0x00
1 In all cases, open bits must be written to 0.



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