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'[EE] FPGA Link to PC'
2002\10\02@013003 by Manu Nair

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I was wondering if someone could tell me if its possible to connect an
Altera FPGA to the PC for serial data transfer. The FPGA will store data in
its memory (or from an external memory chip) and once its plugged into the
PC, it should allow the PC to download all the information.

Does an FPGA allow for a PC link like a uC does? i.e. RS232?

Thanks,
\manu

University of Ottawa

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2002\10\02@091037 by Micro Eng

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In a sense...yes.  There are several 'free IP' verilog and VHDL cores for
building UARTS.  Like all devices, you need to decide how much stuff is
going to be stored, so do you want to use internal ram or external?  Sounds
as if you want to have a device you can move around so perhaps EEPROM is the
better choice?  To my knowledge, there are no FPGA's that have onboard
EEPROM (short of the program memory of course) to do this.  Also keep in
mind, that a FPGA will need an external prom for program storage.  Each time
the device is powered up, it programs itself from it.

So, if I was going to try and do this, and not use a micro, I'd might look
at a CPLD with a UART and transiever chip on it.  Advantage of the PIC of
course is a built in UART rather than coding it in HDL.


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2002\10\03@085549 by Also-Antal Csaba

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Manu Nair wrote:
>
> I was wondering if someone could tell me if its possible to connect an
> Altera FPGA to the PC for serial data transfer. The FPGA will store data in
> its memory (or from an external memory chip) and once its plugged into the
> PC, it should allow the PC to download all the information.
>
> Does an FPGA allow for a PC link like a uC does? i.e. RS232?

http://www.opencores.org/projects/

udv
Csaba

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