Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

MegaFunc. DDR2 High performance Controler issue

hi everybody, I am using example driver generated by mega wizard and altera ddr2 controller(with phy, No-AFI interface) as example to do a test. memory clock speed is 200MHz. I met with a very str...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

with the help of oscilloscope, I found that CT12864AC667 doesn't reply DQS to read command.....

--- Quote Start ---

I am really confused. CT6464A667 should have the same timing parameter as CT12864AC667, why doesn't CT12864AC667 work, but CT6464AC667 works.

--- Quote End ---