Cyclone® V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683375
Date 10/18/2023
Document Table of Contents

5.4.9. Guideline: Pin Placement for General Purpose High-Speed Signals

For general purpose high-speed signals faster than 200 MHz, follow these guidelines to ensure I/O timing closure.
  • Avoid using HMC DQ pins as the input pin.
  • Avoid using HMC DQ and command pins as the output pin.

I/O signals that use the hard memory controller pins are routed through the HMCPHY_RE routing elements. These routing elements have a higher routing delay compared to other I/O pins. To identify the hard memory controller pins for your Cyclone® V device and package, refer to the relevant pin-out files.