Forum Discussion
Altera_Forum
Honored Contributor
15 years agoSome more information about the problem:
Timing is violated in the Phy part of the controller. It is the setup time that is violated. The clock source is the auto-generated PLL mentioned above. Megafunction parameters: Device familiy: Arria II GX Speed grade: 4 PLL reference clock freq: 100 MHz Memory clock frequency : 333.333 MHz Controller data rate: full, with half rate bridge enabled Memory preset: Micron MT8HTF12864HY-800 @ 333 MHz Using differential DQS Address/command clock phase: 90 degrees Board settings: default altera settings, with 1 slot Controller settings: High performance controller II Rest here is default I'm using the Arria II GX development kit. All signals to/from the SODIMM are placed on the bottom I/O banks, as well as the 100MHz clock source. Any help would be greatly appreciated :-)