thank you for your reply ,i really appreciate it . many thanks. I will follow your advice and consult the sheet. regargs LEE At 2011-01-19 17:10:50，"Caglar Akyuz" <[email protected]> wrote: >On Wednesday 19 January 2011 09:49:59 am 李双 wrote: >> hi >> these days i am wondering how to determine the value of CAS latency, when >> trying to config the DDR_SDBCR register of DDR control module. where can i >> get the exat value. as known , the value can be 2 ,2.5,3,4,5,etc. i have >> gone through tmany times he datasheet of spru986b ,which is about the DDR >> control module, but have no result. i guess maybe i should check it from >> the DDR chip datasheet. can anyone help me? >> thanx in advance >> LEE >> > > >DDR memory datasheets clearly states what latencies are supported. You should >consult to your specific chip datasheet. > >Regards, >Caglar
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