[vdr] Re: Increasing SDRAM on DVB cards

[Oliver Endriss <o.endriss@gmx.de>]

Joerg Schneide wrote:
> Hermann Gausterer schrieb:
> > look at page 13:
> > there are other memory area`s the chip is accessing, not only
> > that single sdram .. and in that case, every access to the DP-RAM
> > or the DRAM will result in read/write to your "second" chip
> > so this approuch cannout be used
>
> I don't have the datasheet,
> but in general: If it is possible to decode out all other used areas
> with their CS-lines (or other signals that indicates reliable an
> access), then it is possible to use the concept.

Hermann is right: This approach is not possible due to the memory usage 
of the AV7110. Simply look into the datasheet (p.13).

The AV7110 is a very complex device with many built-in 
functions/peripherals. Each of these reserves a part of the address 
space. There are no external CS signals pins for the built-in 
functions...

Oliver



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