Forum Discussion

MMacg's avatar
MMacg
Icon for New Contributor rankNew Contributor
6 years ago

Timing constraints to use with EPCQ128A on Cyclone10 LP Evaluation Board

Hello. I have been trying to constrain four paths that are being reported as unconstrained in Timing Analyzer in Quartus Standard as shown below: nios:nios_i|nios_epcq_controller2_0:epcq_controlle...
KhaiChein_Y_Intel's avatar
KhaiChein_Y_Intel
Icon for Regular Contributor rankRegular Contributor
6 years ago

Hi,

May I request the design for investigation? What is the software edition and version you are using?

Thanks.

  • MMacg's avatar
    MMacg
    Icon for New Contributor rankNew Contributor
    6 years ago
    Hi YY, You can recreate the issue using this example design posted on the Intel support forums: https://forums.intel.com/s/question/0D50P000043euVGSAY/cyclone-10-lp-evaluation-kit-not-booting-nios-from-epcq-flash?language=en_US The file is attached in the second last comment window called C10LP_NIOS2. If you compile the design you should see the following unconstrained paths reported: SYSTEM:u0|SYSTEM_PERIPHERALS:peripherals|SYSTEM_PERIPHERALS_EPCQ64:epcq64|SYSTEM_PERIPHERALS_EPCQ64_asmi2_inst_epcq_ctrl:asmi2_inst_epcq_ctrl|altera_asmi2_qspi_interface:asmi2_qspi_interface_0|altera_asmi2_qspi_interface_asmiblock:dedicated_interface|dut_asmiblock~ALTERA_DATA0 No input delay, min/max delays, false-path exceptions, or max skew assignments found SYSTEM:u0|SYSTEM_PERIPHERALS:peripherals|SYSTEM_PERIPHERALS_EPCQ64:epcq64|SYSTEM_PERIPHERALS_EPCQ64_asmi2_inst_epcq_ctrl:asmi2_inst_epcq_ctrl|altera_asmi2_qspi_interface:asmi2_qspi_interface_0|altera_asmi2_qspi_interface_asmiblock:dedicated_interface|dut_asmiblock~ALTERA_DCLK No output delay, min/max delays, false-path exceptions, or max skew assignments found SYSTEM:u0|SYSTEM_PERIPHERALS:peripherals|SYSTEM_PERIPHERALS_EPCQ64:epcq64|SYSTEM_PERIPHERALS_EPCQ64_asmi2_inst_epcq_ctrl:asmi2_inst_epcq_ctrl|altera_asmi2_qspi_interface:asmi2_qspi_interface_0|altera_asmi2_qspi_interface_asmiblock:dedicated_interface|dut_asmiblock~ALTERA_SCE No output delay, min/max delays, false-path exceptions, or max skew assignments found SYSTEM:u0|SYSTEM_PERIPHERALS:peripherals|SYSTEM_PERIPHERALS_EPCQ64:epcq64|SYSTEM_PERIPHERALS_EPCQ64_asmi2_inst_epcq_ctrl:asmi2_inst_epcq_ctrl|altera_asmi2_qspi_interface:asmi2_qspi_interface_0|altera_asmi2_qspi_interface_asmiblock:dedicated_interface|dut_asmiblock~ALTERA_SDO No output delay, min/max delays, false-path exceptions, or max skew assignments found I am using Quartus Prime Standard Edition 18.1.0 Build 625 09/12/2018 SJ. Thanks MMG