Which Protocols Support Spread Spectrum Clocking (SSC) on Agilex® 5 and Agilex® 3 FPGA Devices?

Description

In the Agilex® 5 and Agilex® 3 FPGA device families, the Spread Spectrum Clocking (SSC) feature is supported only for specific protocol-based applications and can be optionally enabled for the following protocols:

• PCI Express (PCIe*)
• DisplayPort
• Hard Processor System (HPS) USB 3.1 Gen1
• SATA/SAS (configured through the PMA/FEC Direct PHY IP)

When using GTS transceivers, SSC is enabled by setting the "Spread Spectrum" option to "ENABLE", while keeping the “Enable TX FGT PLL fractional mode” option disabled in the GTS PMA/FEC Direct PHY IP.

Resolution

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