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

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

7.7.4. Estimating the Active Serial Configuration Time

The AS configuration time is mostly the time it takes to transfer the configuration data from an EPCS or EPCQ device to the Cyclone® V device.

Use the following equations to estimate the configuration time:

  • AS x1 mode

    .rbf Size x (minimum DCLK period / 1 bit per DCLK cycle) = estimated minimum configuration time.

  • AS x4 mode

    .rbf Size x (minimum DCLK period / 4 bits per DCLK cycle) = estimated minimum configuration time.

Compressing the configuration data reduces the configuration time. The amount of reduction varies depending on your design.