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Altera_Forum
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15 years ago

Q10.1, cyclone IV and DDR2 altmemphy problem

Hello, I am trying to compile a ddr2 controller using altmemphy as a NIOS peripheral, that is SOPC and avalon bus not stand-alone. It appears I generated the SOPC feature correctly. I also r...
Altera_Forum's avatar
Altera_Forum
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15 years ago

Hello,

Apparently the TCL-script doesn't make the correct assignments, "2.5V" "default" current setting is not suitable for ddr pins..

One cause might be the pin names you used, at least that could be the case for a stand-alone implementation..

The TCL-script assumes standard ddr pin names, for example "mem_cas_n" where "mem_" is a settable prefix.

If the toplevel pin names are not equal to this I can imagine it can't make the appropriate pin assignments..

Hope that helps!

Grtz,

Olaf