Honored ContributorHello ,
I want to use the MT47H32M16HR-25(D9KHQ DDR2),but I can't find the it in the " Mega Wizard -- > DDR2 SDRAM Control and ALTMPHY ", I use the "MT47H32M16CC - 3" ,and repair the parameter ,but the signal(local_init_done) is low.how can i do ? where can i find the example of DDR2(MT47H32M16HR-25)?
Honored ContributorDisable Calibration in Megawizard window
Honored Contributorthank you !
but I can't understand,Honored ContributorCan you simulate your design? Archive your project and send to bekrenyov@mail.ru
Honored Contributorthank you :
I use modelsim to simulate DDR2 - core,it is sucessful . I think it is error by configuration IC parameter or PCB hardwareHonored ContributorMay be two reasons of init failure: calibration failure or invalid parameters loaded into DDR registers. If you disable calibration you can determine which problem you have.
Honored Contributorthank you!
I do ,but I can't understand what 's wrong : I have a demo hardware of "EP3C120", the project can run sucessfully.it include DDR2 ,PLL and something else. but I use the new hardware "EP3C40F484" ,it is failed . so it is difficulty to find what happenHonored Contributoronly change the FPGA and PCB
Honored Contributorhi：
I find the DDR2 core"cs_n,ras_n,cas_n" is always low .but the sucessful porject is pulse .Honored ContributorCheck clocks
Honored Contributorwhen I use signaltop capture the clock it is low,but use oscilloscope it is right"192Mhz"
