Honored Contributor
Honored ContributorI have the same problem with EP4CE115F29C7N and MT47H64M16HR-25EIT x2……
“ Critical Warning (165010): altmemphy pin placement has critical warnings Critical Warning (165040): The DQS pin "ddr2b_dqs[0]" has a frequency of 166.69 MHz which is not supported at location PIN AD7 Info (165017): Location PIN AD7 can support a maximum DQS frequency of 150.02 MHz Critical Warning (165040): The DQS pin "ddr2b_dqs[1]" has a frequency of 166.69 MHz which is not supported at location PIN AF11 Info (165017): Location PIN AF11 can support a maximum DQS frequency of 150.02 MHz Critical Warning (165040): The DQS pin "ddr2b_dqs[2]" has a frequency of 166.69 MHz which is not supported at location PIN AF26 Info (165017): Location PIN AF26 can support a maximum DQS frequency of 150.02 MHz Critical Warning (165040): The DQS pin "ddr2b_dqs[3]" has a frequency of 166.69 MHz which is not supported at location PIN AE18 Info (165017): Location PIN AE18 can support a maximum DQS frequency of 150.02 MHz ” The massage in the ALTMEMPHY says :" Cyclone IV E speed grade 7 does not support DDR2 SDRAM operation above 150.0MHz on the left or right I/O banks. This design must br placed on the top or bottom I/O banks" I followed this ,but it didn't work at all. All the pins the Quartus warning shows are on the bottom ! I tried 4 groups, and the man on the# 1 stair tried different 4 groups. All the 6 DQ groups on the bottom side we had tried but no one could run on a freq over 150MHz? What's wrong??
