looking for an embedded linux hw.

[Erez D]

On Wed, Oct 5, 2011 at 11:14 AM, Shachar Shemesh <shachar at shemesh.biz>wrote:

>  On 10/05/2011 10:28 AM, Erez D wrote:
>
>
>
> The serial baud rates are derived from a clock, which is divided by a
> divider (and then usually divided again by 4).
> you can set the baud rate to any tandard one (if supported by hardware).
> however you can simply supply the divide_by value (if hardware supports
> that, not all hw does, many usb-serial e.g. pl2303 based , does not support
> that).
>
> I'm not sure what SoC the Sheeva is using, but doesn't it have external
> memory access pins you can hook your FPGA to? Wouldn't that be much faster
> than anything a UART will provide (and not be considerably more difficult to
> implement in FPGA)?
>
it uses a marvel SOC (afaik sheevaplug is a marvel refernce design).
actually i wanted more of a streaming connection then a mem-map one, but
connecting directly to the dram interface could be a nice idea.
this would involve creating a dram interface on the fpga, and connecting to
the dram bus. this would also lessen the amount of dram i can have.
I guess currently i would stick with the uart solution. if it would be too
slow, and i would have my own board (currnetly i am using the dockstar), i
would really consider using the dram interface.

thanks for the nice idea
erez.


> Shachar
>
>
> --
> Shachar Shemesh
> Lingnu Open Source Consulting Ltd.http://www.lingnu.com
>
>
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