Intel® Cyclone® 10 LP Core Fabric and General Purpose I/Os Handbook

ID 683777
Date 2/15/2023
Public
Document Table of Contents

6.1.1.3.2. Single .sof File

This method configures both the master device and slave devices with the same .sof.
Figure 86. Devices Receiving the Same Data with a Single .sof File in Multi-Device AS Configuration
The serial configuration device stores one copy of the .sof. You must set up one or more slave devices in the chain. In this setup, all the Intel® Cyclone® 10 LP devices in the chain are connected for concurrent configuration. This reduces the AS configuration time because all the Intel® Cyclone® 10 LP devices are configured in one configuration cycle.
  1. Connect the nCE input pins of all the Intel® Cyclone® 10 LP devices to GND.
  2. Leave the nCEO output pins on all the Intel® Cyclone® 10 LP devices unconnected or use the nCEO output pins as normal user I/O pins.
  3. You must set the master device in AS mode and the slave devices in PS mode.
  4. The DATA and DCLK pins are connected in parallel to all the Intel® Cyclone® 10 LP devices.
Intel recommends putting a buffer before the DATA and DCLK outputs from the master device to avoid signal strength and signal integrity issues.
  • The buffer should not significantly change the DATA-to-DCLK relationships or delay them with respect to other AS signals (ASDI and nCS).
  • The buffer must only drive the slave devices to ensure that the timing between the master device and the serial configuration device is unaffected.
This configuration method supports both compressed and uncompressed .sof. If the configuration bitstream size exceeds the capacity of a serial configuration device, you can enable the compression feature in the .sof or you can select a larger serial configuration device.