Forum Discussion

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

MAX10 DDR3 Controller Error (17044): Illegal connection on I/O input buffer primitive

I purchased the Altera MAX10 FPGA Development Kit with the intent of experimenting with the DDR3 controller. After instantiating the IP and compiling the project I get the dreaded "Error (17044): Il...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

After instantiating the DDR3 controller make sure you run the pin_assignment tcl script. Make sure it runs without errors. My problem arose because I was getting errors when I ran the tcl script. This was eventually traced to a mis-assignment of the ddr3_ck pins as outputs, rather than bidirectional (my error). BTW, after getting no response from this forum I filed a service request with Altera and got excellent, speedy support.