IDT DAC1627D Quick Start Manuals
1
DAC1627D Demo bo ards – Quick Start
v2
2
CGAP2 board:
Storage and Generat ion of
complex patterns up to
32M (I,Q)- words
DAC1627D board
DAC1627D demoboard+ CGAP2
Board presentation
3
DAC1627D SPI
USB control
CGAP2 USB
Power 5 Vdc
SMA100A clock generator : DAC clock
Power 5 Vdc
PXA spectrum
analyzer
DAC1627D demoboard+ CGAP2
Board connections
PXA spectrum
analyzer
DAC1627 Board overview
Block Diagram
FT2232D
USB<-> SPI
DAC1627
Iout
SPI
DAC clk
USB
con
Data0-13
DAC
6V DC in external
Power Generator
Qout
DAC
CGAP2 QSH connector
SPI
LVDS clk
Divider
/2 /4 /8
splitter
global clk
Iout
Qout
One Global clock is used for both DAC board and CGAP 2 boar d.
This Global Clock is split on two signals:
- one is feeding the DAC1627D
- one is divided and send trough the Samtec connector to the CGAP board to feed the FPGA
5
CGAP2 board:
Storage and Generat ion of
complex patterns up to
32M (I,Q)- words
DAC1627D + BGX7100 board
DAC1627D + BGX7100 IQMod demoboard+ CGAP2
Board presentation
6
DAC1627D SPI
USB control
CGAP2 USB
Power 5 Vdc
SMB100A clock generator, DAC clock
737.28MHz, 5dBm
Power 6 Vdc
SMA100A clockgen
IQMod clock 2GHz,
0dBm
PXA spectrum
analyzer
DAC1627D + BGX7100 IQMod demoboard+ CGAP2
Board connections
DAC1627/ BGX7100 Board overview
Block Diagram
Low pass Filter
(BW=300Mhz)
FT2232D
USB<-> SPI
DAC1627
Iout
RFout
SPI
DAC clk
USB
con
Data0-13
DAC
6V DC in external
Power Generator
Qout
DAC
External generator
LO Synthe
clock
CGAP2 QSH connector
SPI
LVDS clk
Divider
/2 /4 /8
splitter
BGX7100
AQM
global clock
One Global clock is used for both DAC board and CGAP board.
This Global Clock is split on two signals:
- one is feeding the DAC1627D
- one is divided and send trough the Samtec connector to the CGAP board to feed the FPGA
S0/S1/S2 jumpers positi on
8
S0: ON
S1: ON
S2: OFF
S0/S1/S2 jumpers are used to configure the divider ratio for the clock feeding the CGAP board..
For the current software revision, t he ratio value needs to be set to 2.
Please, make sure that the jumpers have the foll owing configuration on the boar d:
CLOCKS generation
(Global Clock and LO)
9
Spectrum measurement
Bench overview
10
IDT DAC1627 SPI Software
Software Folders
11
Documentations: Datasheets and QuickS tart
LabVIEW Runtime version 8.6
FTDI USB drivers for CGAP and DAC1627 controls
Main Application
3
1
2
To use the IDT_DAC1627D software, the LabVIEW Runtime 8.6 needs to be installed first.
This Runtime could be f ound on the folder named 1_LabVIEW Runtime 8.6.
The driver required t o ac c es s the USB controller on the boar d c ould be found in the folder 2_USB driver
CGAP board control panel overview
12
Warning: Exiting the Program
13
When using the IDT DAC1627D SPI Software, some USB connexion are opened
between your laptop/desktop and the boards (CGAP 2 and DA C board).
To prevent any hardwar e is s ue when closing the program
, please use the EXIT
button to close properly the USB connexion.
Do not use the [X] button, otherwise, the U SB c onnexion will still
be alive, and the program won’t be closed properly.
If this happens, the program will be displayed i n t he Windows taskbar, but could not be
accessed anymore.
Please use the Task Manager to End the process:
CGAP board start up sequence
14
(1) Initialize the CGAP board USB controller
(2) Specify the Global Clock frequency pr ovided to the DAC board.
(3) Specify the interpolation factor programmed in the DAC1627D.
(4) Specify the clock phase realtionship between the LVDS clock and the
DATA coming from the FPGA.
(5) Press the ‘DATA CLOCK’ button to configure t he CG A P board.
Create Pattern s and program CG AP memories
1/3
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Select the ‘Create Pattern s’ tab
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