GPIO IP User Guide: Arria® 10 and Cyclone® 10 GX Devices

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ID 683136
Date 9/29/2025
Public
Document Table of Contents
Document Table of Contents x
1. GPIO IP User Guide: Arria® 10 and Cyclone® 10 GX Devices
1. GPIO IP User Guide: Arria® 10 and Cyclone® 10 GX Devices x
1.1. Release Information for GPIO IP 1.2. GPIO IP Features 1.3. GPIO IP Data Paths 1.4. GPIO IP Interface Signals 1.5. Verifying Resource Utilization and Design Performance 1.6. GPIO FPGA IP Parameter Settings 1.7. Register Packing 1.8. GPIO FPGA IP Timing 1.9. GPIO FPGA IP Design Examples 1.10. IP Migration Flow for Arria® V, Cyclone® V, and Stratix® V Devices 1.11. GPIO IP User Guide Archives 1.12. Document Revision History for the GPIO IP User Guide: Arria® 10 and Cyclone® 10 GX Devices
1.3. GPIO IP Data Paths x
1.3.1. Input Path 1.3.2. Output and Output Enable Paths
1.4. GPIO IP Interface Signals x
1.4.1. Shared Signals 1.4.2. Data Bit-Order for Data Interface 1.4.3. Input and Output Bus High and Low Bits 1.4.4. Data Interface Signals and Corresponding Clocks
1.8. GPIO FPGA IP Timing x
1.8.1. Timing Components 1.8.2. Delay Elements 1.8.3. Timing Analysis 1.8.4. Timing Closure Guidelines
1.8.3. Timing Analysis x
1.8.3.1. Single Data Rate Input Register 1.8.3.2. Full-Rate or Half-Rate DDIO Input Register 1.8.3.3. Single Data Rate Output Register 1.8.3.4. Full-Rate or Half-Rate DDIO Output Register
1.9. GPIO FPGA IP Design Examples x
1.9.1. GPIO FPGA IP Synthesizable Quartus® Prime Design Example 1.9.2. GPIO FPGA IP Simulation Design Example
1.10. IP Migration Flow for Arria® V, Cyclone® V, and Stratix® V Devices x
1.10.1. Migrating Your ALTDDIO_IN, ALTDDIO_OUT, ALTDDIO_BIDIR, and ALTIOBUF IP Cores 1.10.2. Guideline: Swap datain_h and datain_l Ports in Migrated IP
1. GPIO IP User Guide: Arria® 10 and Cyclone® 10 GX Devices

1.8.3.4. Full-Rate or Half-Rate DDIO Output Register

The output side of the full-rate and half-rate DDIO output registers are the same.
Table 17.  DDIO Output Register .sdc Command Examples
Command Command Example Description
create_clock and create_generated_clock

create_clock -name ddio_out_fr_clk -period "200 MHz" ddio_out_fr_clk

create_generated_clock -source ddio_out_fr_clk -name ddio_out_fr_outclk ddio_out_fr_outclk

 Generate the clocks to the DDIO and the clock to transmit.
set_output_delay

set_output_delay -clock ddio_out_fr_outclk 0.55 ddio_out_fr_data

set_output_delay -add_delay -clock_fall -clock ddio_out_fr_outclk 0.55 ddio_out_fr_data

 Instruct the Timing Analyzer to analyze the positive and negative data against the output clock.
set_false_path

set_false_path -rise_from ddio_out_fr_clk -fall_to ddio_out_fr_outclk

set_false_path -fall_from ddio_out_fr_clk -rise_to ddio_out_fr_outclk

 Instruct the Timing Analyzer to ignore the rising edge of the source clock against the falling edge of the output clock, and the falling edge of source clock against rising edge of output clock
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