Intel® Quartus® Prime Pro Edition User Guide: Debug Tools

ID 683819
Date 10/02/2023

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5.1. About the Intel® Quartus® Prime Logic Analyzer Interface

The Intel® Quartus® Prime Logic Analyzer Interface (LAI) allows you to use an external logic analyzer and a minimal number of Intel-supported device I/O pins to examine the behavior of internal signals while your design is running at full speed on your Intel-supported device.

The LAI connects a large set of internal device signals to a small number of output pins. You can connect these output pins to an external logic analyzer for debugging purposes. In the Intel® Quartus® Prime LAI, the internal signals are grouped together, distributed to a user-configurable multiplexer, and then output to available I/O pins on your Intel-supported device. Instead of having a one-to-one relationship between internal signals and output pins, the Intel® Quartus® Prime LAI enables you to map many internal signals to a smaller number of output pins. The exact number of internal signals that you can map to an output pin varies based on the multiplexer settings in the Intel® Quartus® Prime LAI.

Note: The term “logic analyzer” when used in this document includes both logic analyzers and oscilloscopes equipped with digital channels, commonly referred to as mixed signal analyzers or MSOs.

The LAI does not support Hard Processor System (HPS) I/Os.