GEM Interface Implementations

MPSoC to Versal Adaptive SoC GEM Comparisons

The AMD Versal™ adaptive SoC GEM interface is similar to the controller in the AMD Zynq™ UltraScale+™ MPSoC.

• Added features
  • Time sensitive network (TSN)
  • New RXFIFO high and low-level watermarks use pause frames for RX flow control
  • Large segment offload (LSO) WANs added
• Removed features
  • PS SGMII via PS GTR (PCS internal to GEM)
  • 1000 BASE-x physical coding sublayer (PCS)
  • Ten-bit interface (TBI) to PL via EMIO

GEM Implementations

The gigabit ethernet MAC (GEM) interface has remained mostly the same for all SoCs.