AN 693: Remote Hardware Debugging over TCP/IP for Altera SoC

ID 723698
Date 5/11/2015
Public

1.1. TCP/IP Communication Channel

Historically, the Altera System-Level Debugging (SLD) communication solution was based on the Altera JTAG Interface (AJI) which interfaced with the JTAG TAP controller (hard atom in Altera devices which implements the JTAG protocol). The SLD tools (SignalTap II Logic Analyzer, In-System Sources and Probes (ISSP), In-System Memory Content Editor) and the Nios II on-chip instrumentation (OCI) use the JTAG channel for communication between software and hardware. To support communication via TCP/IP, the SLD Hub Controller replaces the JTAG TAP controller.
Figure 1. TCP/IP Communication Channel Block Diagram