Article ID: 000083780 Content Type: Troubleshooting Last Reviewed: 09/11/2012

Is PLL cascading supported for Cyclone IV GX device transceivers?

Environment

BUILT IN - ARTICLE INTRO SECOND COMPONENT
Description

No, you cannot cascade the PLLs when they are used for transceiver. Quartus® II version 10.0 Service Pack 1 and earlier may not restrict such implementation, but PLL cascading is not supported when the PLL are used for transceiver.

Refer to the "Cyclone® IV Transceivers Architecture" chapter of the Cyclone IV Handbook for supported PLL/clocking configurations.

Related Products

This article applies to 2 products

Cyclone® IV FPGAs
Cyclone® IV GX FPGA

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