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Altera_Forum
Honored Contributor
Honored Contributorcyclone iii control ddr2.....i need help
i used cyclone iii and quartus ii 9.1 .
after building a "DDR2 SDRAM High Performance Controller" according to MegaWizard. I get two modules: HPC and ALTMEMPHY. After reading handbook,i found that if i want to control a ddr2 sdram,i should use both of them ,right?? but how to connect them?????????? these ctl_xxx signals should be connected to controller according to handbook. the control just has some dq signal,but phy has the clt_wdata and clt_rdata.they don`t match. and i think the local_xxx signals should be connected to user logic,right?? :(:(:(:(5 Replies
Altera_ForumHi,
You might be better off building it as a SOPC project and exporting the local bus signals for your own logic. That way you'll get a single block and SOPC builder generates all the timing constraints you need (which are many with DDR2). Mark.- Altera_Forum
ALTMEMPHY will be instantiated by the DDR2 controller. You don't need to care for it.
- Altera_Forum
thank you~i will try it.
- Altera_Forum--- Quote Start --- ALTMEMPHY will be instantiated by the DDR2 controller. You don't need to care for it. --- Quote End --- thanks for your help.
- Altera_Forum--- Quote Start --- ALTMEMPHY will be instantiated by the DDR2 controller. You don't need to care for it. --- Quote End --- thank you~I will try it.
