Intel® Agilex™ Hard Processor System Technical Reference Manual

ID 683567
Date 11/11/2022
Public

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14.3.2. FPGA Access

Most HPS peripheral interfaces can be connected into the FPGA fabric, instead of to the dedicated I/O pins.

HPS peripherals connect to the FPGA fabric through the FPGA access pin MUX. When connected to the FPGA fabric, peripheral interfaces are exposed as ports of the HPS component.

Connecting HPS peripherals to the FPGA fabric can be a strategy to make optimal use of the I/O pins available to the HPS. For example, you can route HPS peripherals through the FPGA if your design requires more I/Os than the HPS I/O block provides.

All HPS peripherals except the USB 2.0 OTG and GPIO controllers can interface to the FPGA fabric.