Type: Answers

Area: Intellectual Property


IP Product: Triple Speed Ethernet MAC

Why won't the MII interface stop transmitting frame when Triple Speed Ethernet IP MegaCore MAC operating mode is switched from half to full duplex?

Description

This further leads to continue sending data out from MAC even there is no traffic at Avalon®-ST on TX FIFO. This problem would still happen when the mode change is made after SW_RESET is successful, provided the TX block is still transmitting data.

The following patch provides a solution to make sure Triple Speed Ethernet IP MegaCore® incorporates TX data transmission status in SW_RESET process. Now SW_RESET can only complete when TX data and RX data transmission is stopped, avoiding conflict with mode change.

Please download the appropriate Quartus® II software version 10.0SP1 patch 1.210 from the following links:

Quartus II software version 10.0SP1 patch 1.210 for Windows

Quartus II software version 10.0SP1 patch 1.210 for Linux

Quartus II software version 10.0SP1 ReadMe for patch 1.210

Caution:

You must either have previously installed the Quartus II 10.0 SP1 software or must  install the Quartus II 10.0 SP1 software before installing this patch. Otherwise, the patch will not be installed correctly and the Quartus II software will not run properly.

After you install the patch please regenerate your Triple Speed Ethernet MegaCore before you compile your design.