Article ID: 000077919 Content Type: Troubleshooting Last Reviewed: 07/02/2012

XON Pause Frames are Sent when Receive FIFO Buffer is Congested

Environment

Quartus Edition

Quartus® II Subscription Edition

Version Found: 11.1 Version Fixed: 11.1.2

FPGA Intellectual Property

Ethernet

Version Found: 11.1 Version Fixed: 11.1.2

BUILT IN - ARTICLE INTRO SECOND COMPONENT

Critical Issue

Description

This errata affects the Triple-Speed Ethernet MegaCore function.

The MAC function sends XON pause frame instead of XOFF pause frame when the receive FIFO buffer is almost full.

This issue affects all designs with full-duplex flow control enabled.

Resolution

This issue has no workaround.This issue is fixed in version 11.1 SP2 of the Triple-Speed Ethernet MegaCore function.

All postings and use of the content on this site are subject to Intel.com Terms of Use.