Article ID: 000075418 Content Type: Troubleshooting Last Reviewed: 07/03/2018

Why do I see timing violations in the Intel® Arria® 10 and Intel® Cyclone® 10 HDMI design example?

Environment

    Intel® Quartus® Prime Pro Edition
    HDMI Intel® FPGA IP
BUILT IN - ARTICLE INTRO SECOND COMPONENT

Critical Issue

Description

When you generate and compile HDMI design example for the Intel® Arria® 10 and Intel® Cyclone® 10 FPGAs, you might encounter timing violation due to the clock domain crossing for the following path:

From Node:
*|hdmi_0|u_bitec_hdmi_rx|SCDC_TMDS_CONFIG[1]

To Node:
*|hdmi_0|u_bitec_hdmi_rx|Alignment_Deskewing.hdmi_align_deskew|bit_slip[1].bitslipper|index[*]

Resolution

To work around this problem, please add the following constraint to the SDC file:

set_multicycle_path -end -setup -from *|hdmi_0|u_bitec_hdmi_rx|SCDC_TMDS_CONFIG[1] -to *|hdmi_0|u_bitec_hdmi_rx|Alignment_Deskewing.hdmi_align_deskew|bit_slip[*].bitslipper|index[*] 2

set_multicycle_path -end -hold -from *|hdmi_0|u_bitec_hdmi_rx|SCDC_TMDS_CONFIG[1] -to *|hdmi_0|u_bitec_hdmi_rx|Alignment_Deskewing.hdmi_align_deskew|bit_slip[*].bitslipper|index[*] 1

This problem has been fixed starting in version 18.0 of the Intel® Quartus® Prime software.

Related Products

This article applies to 2 products

Intel® Arria® 10 FPGAs and SoC FPGAs
Intel® Cyclone® 10 GX FPGA

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