Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 7/07/2025
Public

Visible to Intel only — GUID: kbv1674510325586

Ixiasoft

Document Table of Contents

5.15.5.3.4. HPS JTAG Pin MUX Register

The pinmux_jtag_usefpga register selects whether HPS JTAG is accessed from the HPS pins or the FPGA interface.

At cold reset, the HPS JTAG pin MUX register defaults to HPS I/O pins. A warm reset event does not affect this register.

Note: Although the HPS JTAG pin MUX is configured through the control registers, Altera recommends against reconfiguring the HPS JTAG pin MUX after I/O configuration is complete.