Why does the Arria® 10 Multi-Rate Ethernet PHY IP in USXGMII Auto-Negotiation mode fail in simulation? - Why does the Arria® 10 Multi-Rate Ethernet PHY IP in USXGMII Auto-Negotiation mode fail in simulation? Description The 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. Resolution To work around this problem, set usxgmii_link_timer bit[19:14]=0x01 at address 0x412 to speed up the auto-negotiation process for simulation. This change sets usxgmii_link_timer to the fastest link timer value possible in this register i.e. 0.05ms. Custom Fields values: ['novalue'] Troubleshooting 1408201100; FB: 478754; False ['1G 2.5G 5G 10G Multi-rate Ethernet PHY IP', 'Ethernet 10G MAC IP', 'Low Latency Ethernet 10G MAC IP'] ['novalue'] novalue novalue ['Arria® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']