Article ID: 000078723 Content Type: Troubleshooting Last Reviewed: 08/13/2012

What are the expected Cyclone IV GX speed grades required to support PCIe in SOPC Builder?

Environment

BUILT IN - ARTICLE INTRO SECOND COMPONENT
Description

The expected device speedgrades required to support PCIe® in SOPC Builder are expected to be very similar to Cyclone® III speedgrades for the Avalon®-MM Interface types.

The current PCIe UG is actually missing key information regarding C4GX HIP speed-grade support for the Avalon-MM interface.

1) For C4GX in SOPC Builder PCIe x1 @62.5Mhz, all speed-grades are supported (-6,-7,-8).

2) For C4GX in SOPC Builder PCIe x4, x2 or even x1 @125Mhz, the speed-grade value should be: -6 (or the fastest speed grade) due to fabric performance.

These numbers are preliminary pending device characterisation.

Related Products

This article applies to 1 products

Cyclone® IV GX FPGA