problem with MCF5208 interfacing with 64M 16-bit Width SDR SDRAM

kuoching — Wed, 18 Apr 2007 16:12:12 GMT

i try to develop a board using MCF5208 and ISSI IS42S16400(64M-bit,16bit width SDRAM).

I found a very strange issue :

when i try to change a data in the SDR ,another address will changes accordingly.

The address is the current address + 256

for example,

When I write a 0x0002 to 0x40000000, the data at 0x40000200 will change to 0x0002

my schmatics follows the illustration on Page 317 Figure 8-2 of MCF5208RM.

Your help will be highly appriecated .

Thanks a lot

Re: problem with MCF5208 interfacing with 64M 16-bit Width SDR SDRAM

Edison_Tran — Thu, 07 May 2009 04:27:44 GMT

Hi Kuoching

Have you found the solution for this problem ? I'm facing the same problem and hope you can help with your past experiences

Thanks,

Edison