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RE: SDRAM+ Flash memory over 64Mb



Hi,

Yes. ETRAX will use them as address pins when accessing the flash and 
will generate the SDRAM control signals when accessing SDRAM. The chip
selects will guarantee that only the intended memory decodes the
signals.

/Mikael

-----Original Message-----
From: owner-dev-etrax@xxxxxxx.com]On">mailto:owner-dev-etrax@xxxxxxx.com]On
Behalf Of Simon
Sent: Wednesday, April 11, 2001 9:30 AM
To: Mikael Starvik; dev-etrax
Subject: Re: SDRAM+ Flash memory over 64Mb


Hi,
    You meant I can use the address pins A23, A24, and A25 to Both of Flash
and SDRAM at the same time?
Simon




> Hi,
>
> You can still use Flashes up to 64 MByte with ETRAX 100 LX
> (the address pins are still address pins when the flash
> is accessed) but currently I don't think you can get
> flashes larger than 8 MByte. If you need more you can add
> a second flash.
>
> Best Regards
> /Mikael
>
> -----Original Message-----
> From: owner-dev-etrax@xxxxxxx.com]On">mailto:owner-dev-etrax@xxxxxxx.com]On
> Behalf Of Simon
> Sent: Wednesday, April 11, 2001 5:07 AM
> To: dev-etrax
> Subject: SDRAM+ Flash memory over 64Mb
>
>
> Hi all,
>     I wonder whether it is possible to connect SDRAM and Flash which is
> larger than 64Mb?
> 'Cause I figured out that the address pins A23, A24, and A25 become the
> control signals for
> SDRAM. So these address pins are not for address any more, right? Or it is
> possible to connect
> these three pins to SDRAM and flash memory at the same time?
> Best Regards,
>
> Simon