Lpc2000

I use a phytec board phyCORE LPC2294 and have troubles to access the 
external SRAM. I use the following initialisation for the EMC :

    PINSEL2 = 0x0E614924;
    BCFG1   = 0x20000403;

I may read/write the RAM without problems, but the the same pattern of 
4 Bytes is repeated over the whole address range (0x81000000 - 
0x81FFFFFF). It seems that the address lines A2:A23 are not working 
correct but I don't have any idea why.

Has anybody seen such a behaviour ? 
Any suggestions what I've made wrong ?

Thanks
Klaus

Is the EMC module powered up?

/Jesper
----- Original Message ----- 

From: "klgromann" <klaus.gromann@...>
To: <lpc2000@yahoogroups.com>
Sent: Friday, August 26, 2005 2:28 PM
Subject: [lpc2000] External Memorey Access with LPC2294


> I use a phytec board phyCORE LPC2294 and have troubles to access the 
> external SRAM. I use the following initialisation for the EMC :
> 
>     PINSEL2 = 0x0E614924;
>     BCFG1   = 0x20000403;
> 
> I may read/write the RAM without problems, but the the same pattern of 
> 4 Bytes is repeated over the whole address range (0x81000000 - 
> 0x81FFFFFF). It seems that the address lines A2:A23 are not working 
> correct but I don't have any idea why.
> 
> Has anybody seen such a behaviour ? 
> Any suggestions what I've made wrong ?
> 
> Thanks
> Klaus
> 
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
>

Sorry for the inconvenience, I had had to search the older messages 
before. In msg 5541, Didier had mentioned the correct values for the 
phytec board :

PINSEL2 = 0x0FE1 69EC 
BCFG1   = 0x2000 0400 

I don't know exactly which bits makes the board work now, but it 
does :-)

regards
Klaus

--- In lpc2000@yahoogroups.com, "Jesper Snedker" <js@j...> wrote:
> Is the EMC module powered up?
> 
> /Jesper
> ----- Original Message ----- 
> From: "klgromann" <klaus.gromann@r...>
> To: <lpc2000@yahoogroups.com>
> Sent: Friday, August 26, 2005 2:28 PM
> Subject: [lpc2000] External Memorey Access with LPC2294
> 
> 
> > I use a phytec board phyCORE LPC2294 and have troubles to access 
the 
> > external SRAM. I use the following initialisation for the EMC :
> > 
> >     PINSEL2 = 0x0E614924;
> >     BCFG1   = 0x20000403;
> > 
> > I may read/write the RAM without problems, but the the same 
pattern of 
> > 4 Bytes is repeated over the whole address range (0x81000000 - 
> > 0x81FFFFFF). It seems that the address lines A2:A23 are not 
working 

> > correct but I don't have any idea why.
> > 
> > Has anybody seen such a behaviour ? 
> > Any suggestions what I've made wrong ?
> > 
> > Thanks
> > Klaus
> > 
> > 
> > 
> > 
> > 
> > 
> >  
> > Yahoo! Groups Links
> > 
> > 
> > 
> >  
> > 
> > 
> > 
> >