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problem with dsk6711 emif

Started by shred_gao ●December 19, 2003
hello!
I have some trouble with dsk6711 emif.
the value in the EMIF registers is:
(this is according to my board condition)
*(unsigned int *)EMIF_GCR =0x30f8;
*(unsigned int *)EMIF_CE0 =0x30;
*(unsigned int *)EMIF_CE1 =0xffffff03;
*(unsigned int *)EMIF_CE2 =0xffffff23;
*(unsigned int *)EMIF_SDCTRL=0x07117000;
*(unsigned int *)EMIF_SDRP =0x61a;
*(unsigned int *)EMIF_SDEXT =0x54519;
the AREADY pin is pulled high on my board
When I access the CE2,I check CE2,AWE,ARE and AOE,and there is no
change on my oscilloscope(100MHz).I am confused,what is the matter
with my board.
thinks
shred_gao



Reply by Mike Dunn ●January 1, 20042004-01-01
hello shred_gao,
 
Sometimes it is very difficult to trigger a scope on a single event.
 
Try writing a simple endless loop that reads from [or writes to] the first address of CE2, increments for 1M times and starts over.
 
Your scope should be able to pick up the signals.
 
mikedunn

shred_gao <c...@sina.com> wrote:
hello!
I have some trouble with dsk6711 emif.
the value in the EMIF registers is:
(this is according to my board condition)
*(unsigned int *)EMIF_GCR =0x30f8;
*(unsigned int *)EMIF_CE0 =0x30;
*(unsigned int *)EMIF_CE1 =0xffffff03;
*(unsigned int *)EMIF_CE2 =0xffffff23;
*(unsigned int *)EMIF_SDCTRL=0x07117000;
*(unsigned int *)EMIF_SDRP =0x61a;
*(unsigned int *)EMIF_SDEXT =0x54519;
the AREADY pin is pulled high on my board
When I access the CE2,I check CE2,AWE,ARE and AOE,and there is no
change on my oscilloscope(100MHz).I am confused,what is the matter
with my board.
thinks
shred_gao
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