Re: [softrock40] Re: SDXCVR Board Production
- Understood. Being a programming wienie, I use verilog but I know Lyle
(for example) uses mostly schematic capture. I did not understand Dave
was attempting to pass through the 8051 core (did you see the EOL notice
Phil Covington wrote:
> --- In firstname.lastname@example.org, Robert McGwier <rwmcgwier@...> wrote:--
>> FX2 on the USRP does 35 MB/sec sustained on my computers.
> The USRP uses the GPIF mode of the FX2. There is also a FPGA in
> between the ADC/DACs and the FX2. There will be NO WHERE near 35
> MB/sec if the 8051 core of the FX2 is between the ADC and the USB
> interface. In Dave's schematic, he has not worked out the interface
> between the ADC's I2S and the FX2. If he uses the FIFO or GPIF modes
> (in either 8 or 16 bit) he cannot do the I2S interface with the 8051
> core of the FX2. He needs something external to the FX2 to do this
> which would interface to the FX2's FIFOs. Discrete logic or a CPLD
> would work. I would lean towards a CPLD since I would not want a
> bunch of discrete logic chips scattered all about. The free Quartus
> II web edition will program the MAXII CPLD. All you need is a
> MAXBLASTER clone, which can be purchased or can be built for less than
> $10. I built mine in about 30 minutes with junk box parts for $0.
> You don't even need to use VHDL or Verilog for this - just use the
> schematic entry mode and draw it up like you are wiring together
> discrete logic chips. Very simple.
> 73 de Phil N8VB
AMSAT VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats,
NJQRP/AMQRP, QRP ARCI, QCWA, FRC. ARRL SDR Wrk Grp Chairman
Laziness is the number one inspiration for ingenuity. Guilty as charged!
- I uploaded the files for my FX2_Commander Windows program for testing the USB
board. I also fixed the link which was incorrect. The zip includes both source
files(Visual Studio C++ 200d) and compiles file. The compiles file is in the release
sub directory. Note that you must have Microsoft .net 2.0 installed on your computer
to run the program.
Dave - WB6HW