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-   -   Multiple device configuration using local update over ethernet (http://www.fpgacentral.com/group/showthread.php?t=49955)

Wilhelm Klink 08-05-2003 05:11 AM

Multiple device configuration using local update over ethernet
 
Altera have told me it is not possible to perform a multiple device
configuration (typically done by hooking up the nCE/nCEO pins of the
individual FPGAs) when using local update mode (update over ethernet).
Does anyone know why it isn't possible? It is not reasonable for a
board with 10 FPGAs to have 10 separate ethernet connections, and
having to update a set of these boards in the field using a
programming cable would be most tedious.

Valeria Dal Monte 08-05-2003 06:26 AM

Re: Multiple device configuration using local update over ethernet
 

Wilhelm Klink <[email protected]> wrote in message
[email protected]...
> Altera have told me it is not possible to perform a multiple device
> configuration (typically done by hooking up the nCE/nCEO pins of the
> individual FPGAs) when using local update mode (update over ethernet).
> Does anyone know why it isn't possible? It is not reasonable for a
> board with 10 FPGAs to have 10 separate ethernet connections, and
> having to update a set of these boards in the field using a
> programming cable would be most tedious.


Regardless of ethernet, at least for the passive serial configuration mode
in SRAM devices, it is possible. I did it.




Wilhelm Klink 08-06-2003 02:12 AM

Re: Multiple device configuration using local update over ethernet
 
Yes, you can do it, but can you do it for "local/remote update mode" (ie MSEL2 = 1).

"Valeria Dal Monte" <[email protected]> wrote in message news:<[email protected]> ...
> Wilhelm Klink <[email protected]> wrote in message
> [email protected]...
> > Altera have told me it is not possible to perform a multiple device
> > configuration (typically done by hooking up the nCE/nCEO pins of the
> > individual FPGAs) when using local update mode (update over ethernet).
> > Does anyone know why it isn't possible? It is not reasonable for a
> > board with 10 FPGAs to have 10 separate ethernet connections, and
> > having to update a set of these boards in the field using a
> > programming cable would be most tedious.

>
> Regardless of ethernet, at least for the passive serial configuration mode
> in SRAM devices, it is possible. I did it.



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