USB Connected
Software Defined Digital Radio system
- User programmable Xilinx XC2V1000-4 FPGA.
- Two channels of 125Mhz 12 bit A/D
- Two channels of single ended 125Mhz 14
bit D/A
- 8 bits digital I/O
- User programmable 300Mhz TMS320C6203 16
bit fixed point DSP
- 32Mbytes SDRAM coupled with the DSP plus
2Mbytes Flash ROM for DSP booting and N/V
storage
- Hi Speed (480Mbits/sec) USB 2.0
connection to a host PC.
- Can be used as a stand alone board for
embedded systems.
- FPGA can be configured via USB, Xilinx
JTAG cable or from on-board PROM
- Single 5V power supply required – 20W
mains Power Supply Unit included
- HUNT ENGINEERING Host API supported for
Windows 2000 and XP and Linux – FPGA and DSP
loading, resetting and data exchange all
performed with simple to use software interface.
The RTG003 is a self contained programmable system ideal for
developing Software Defined Radio. It can be used stand alone or
connected to a PC via the USB 2.0 connection.
The fast A/D and D/A channels are directly connected to the
user programmable FPGA, allowing data to be processed by a user
FPGA program. The FPGA can be used to perform digital processing
between the analogue inputs and outputs, or the data can be
passed to and from the DSP or a PC using the USB 2.0 connection
and provided software.
The DSP can be programmed to perform whatever tasks you need
– the supplied example uses the FPGA to make a Digital Down
Conversion (DDC), the results of which are passed to the DSP for
protocol processing. The DSP then outputs its results to the PC
where a C++ program receives processes and graphs the data.
HUNT ENGINEERING supply Hardware Interface Layer VHDL for the
FPGA and HERON-API for the DSP – speeding your development by
allowing you to concentrate on your algorithms.
The USB connection is supported via the HUNT ENGINEERING
Host-API software. This allows software applications and tools
on the Host PC to access the hardware using a consistent
software interface without the need to understand or program the
hardware or USB directly.
The FPGA program can be loaded over the USB connection using
a software tool that directly accepts the output from
development tools for the Xilinx FPGA. Alternatively a Xilinx
JTAG cable (Parallel or USB) can be used to load the FPGA and or
program the on board configuration PROM.
The DSP program can be loaded over the USB connection using a
software tool that directly accepts the output from development
tools for the TI DSP. Alternatively a JTAG emulator card can be
used to load the DSP and or program the on board FLASH memory.
The FIFO connections can be used to stream data to or from a
module in the system. They are capable of up to 50Mbytes/second
in each direction, but the Host PC, its USB controller and the
operating system will all impose their own limits to this speed.
The system is delivered ready to go with a power supply
(requires an IEC lead specific to your country), USB cable, I/O
cables and a CD with all of your documentation, software tools
and examples. The only other thing you need are development
tools for the Xilinx FPGA, for example Xilinx Foundation ISE
from www.xilinx.com and a
suitable 'C6000 JTAG emulator card with Code Composer Studio
(here is a list of some
vendors of 'C6000 emulator cards, please note: Hunt
Engineering does NOT endorse any of these suppliers).
Block Diagram
Technical Specification
- Analogue I/P
2 channels with common or independent clocking set by
jumper
Standard Input Characteristics:
A/C coupled 50R, signal B/W from 750Hz to 500Mhz
Zero input noise typically 3 levels maximum 8 levels
Offset typically +-3 levels maximum +-12 levels
Optional Input types:
A/C coupled as standard but choose I/P impedance from
50R to 1K
D/C
D/C coupled choose I/P impedance from 50R to 1K, Signal
B/W 0hz to 500Mhz but each input must not exceed the
range 0v to +5V (of this module). This means a 4V DC
offset is required.
Zero input noise typically 3 levels maximum 8 levels
Offset typically +-12 levels maximum +-16 levels
- Analogue O/P specifications
Standard Output Characteristics:
2 single ended channels with independent clocking
A/C coupled 10R, signal B/W from 1250Hz to 145Mhz
Optional Output types:
D/C coupled 10R, signal B/W 0-145Mhz
- FPGA
Xilinx 1M gate Virtex-II FPGA, speed grade 4.
XC2V1000-4FG456.
With no heatsink fitted (standard) the FPGA can
dissipate 2.4 Watts at 50deg C ambient temperature.
The power circuits are capable of delivering more than
this, so a heatsink may be required for your design.
If that is the case a larger 5V Power Supply Unit may
also be necessary
- DSP
Texas Instruments' 'C6203 @ 300Mhz, 32Mbytes SDRAM,
2Mbytes Flash ROM
4 bit digital Inputs, 4 bit digital Outputs, 2McBSPs
- Host Bus
USB 2.0 capable of up to 50Mbytes/second dependent on
host PC and USB configuration.
- Maximum Dimensions:
160mm x 110mm x 21mm.
- Power requirements
5V Max: 3.5A plus the power taken by the FPGA. Typ: 2.6A
plus FPGA
The Mains Power Supply Unit included can supply up to
4A, which is enough to power an FPGA design that is less
than the 2.4W bare package maximum dissipation.
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