Device Family: Intel® Arria® 10 GT, Intel® Arria® 10 GX, Intel® Arria® 10 SX, Arria® V GZ, Stratix® V GS, Stratix® V GT, Stratix® V GX

Type: Answers

Area: Intellectual Property


IP Product: PCI Express 1/2/4/8 Lanes (x8)

Why does my Altera Hard IP for PCI Express not enter compliance loopback in Gen 3 mode?

Description

The Altera® Hard IP core for PCI® Express will not enter compliance loopback mode at Gen3 rates if the compliance receive bit in the configuration register space, has not been set by the loopback master.

Workaround/Fix

To comply with the PCI Express Specification, ensure your loopback master sets the compliance receive bit correctly.