Forum Discussion

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

PCI Express to external memory interface.

Hi There, I am working to access external memory (DDR2) using pci express, i took a reference design from http://www.alterawiki.com/wiki/pci_express_in_qsys_example_designs and prepared design...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

LTSSM toggles between state 0x00 and 0x01 indicates the link fails the Receiver Detect sequence.

Ensure your PCIe Tx lane has a capacitor value that is between of 0.075μF–0.265 μF. Normally people uses a 0.1uF cap.