Device Family: Intel® Arria® 10

Type: Answers

Area: Intellectual Property


Last Modified: March 27, 2018
Version Found: v17.1
Bug ID: FB: 478754;

Why does the Intel® Arria® 10 Multi-Rate Ethernet PHY IP in USXGMII Auto-Negotiation mode fail in simulation?

Description

The Intel® Arria® 10 Multi-Rate Ethernet PHY IP default value of usxgmii_link_timer at register address 0x412 is 0x7c000. This default reset value sets the link timer to 1.6ms, which is too long in simulation.

Workaround/Fix

To work around this problem, set usxgmii_link_timer bit[14]=1 at address 0x412 to speed up the auto-negotiation process for simulation. This change sets usxgmii_link_timer=0x4000, which is the fastest link timer value possible in this register (0.05ms).