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AR# 55235

LogiCORE Ten Gigabit Ethernet PCS/PMA v3.0 - 10GBASE-KR - Auto Negotiation with no FEC - Marginal timing seen

Description

When using the Ten Gigabit Ethernet PCS/PMA v3.0 configured for 10GBASE-KR with Auto Negotiation and no FEC, marginal timing has been seen.

Solution

When small timing failures are seen, changing Vivado Synthesis and Implementation tool options have been seen to result in passing timing.  Some possibilities include:

- In Synthesis Settings, change control_set_opt_threshold to 60.
- In Implementation Settings under Place Design, set the directive to ExtraPostPlacementOpt.
AR# 55235
Date Created 03/28/2013
Last Updated 04/01/2013
Status Active
Type General Article
IP
  • Ten Gigabit Ethernet PCS/PMA
  • 10 Gigabit Ethernet PCS-PMA with FEC/Auto-Negotiation for backplanes (10GBASE-KR)