Type: Answers

Area: Intellectual Property


IP Product: Triple Speed Ethernet MAC

Why does the Triple Speed Ethernet standalone SGMII PCS with PMA exchange incorrect device ability status of 0x4001?

Description

Due to a bug, the Triple Speed Ethernet (TSE) SGMII PCS only variant does not correctly advertize its device capability to the partner device during auto-negotiation.

Currently the TSE PCS only variant always exchanges the control word 0x4001 when the correct code word would typically be 0xd801 depending on the configuration of the IF_Mode Register.

This issue affects all TSE PCS SGMII only implementations in all devices.

This issue will be fixed in a future version of the Quartus® II software.

Workaround/Fix