Integrated Logic Analyzer (ILA)

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AMD Vivado™ ChipScope Analyzer---Hardware Debug for FPGA and Adaptive SoCs
AMD· 2025-07-17 16:04
Debugging Flows & Tools - The industry utilizes a four-step debug process: probing, implementing, analyzing, and fixing [1][2][3] - AMD provides ChipScope debug solution to reduce verification and debugging time, maximizing visibility into programmable logic during system operation [3] - Vivado Logic Analyzer (VLA) interacts with debug cores for triggering and data collection via JTAG pins, supporting various triggering scenarios and flexible probing [4] - Captured data can be reused as test vectors, enhancing design verification, and a single JTAG connection simplifies programming and debugging [5] - Debug cores like Integrated Logic Analyzer (ILA), System ILA, Virtual Input/Output (VIO), and JTAG to AXI Master enable design visibility without obstructing functionality [6] Debug Cores & Features - Integrated Logic Analyzer (ILA) IP core monitors internal signals with advanced features like Boolean trigger equations and edge transition triggers, configurable with up to 1024 probe ports [7] - Virtual Input/Output (VIO) core monitors and drives internal signals in real time, presenting data as virtual LEDs, pushbuttons, or toggle switches [9][10] - JTAG to AXI Master debug feature generates AXI transactions to interact with AXI-Full and AXI-Lite slave cores [11][12] - BSCAN to JTAG Converter core bridges BSCAN and JTAG interfaces for designs supporting JTAG but not BSCAN [13][14] Data Cables & Debug Ports - Platform Cable USB II is a general-purpose cable for programming and debugging, supporting devices with target clock speeds from 750 kHz to 24 MHz via USB 20 [15] - SmartLynq Data cable provides JTAG rates up to 40 Mb/s via Ethernet and USB, supporting JTAG debugging and indirect flash programming [16][17] - SmartLynq+ is designed for high-speed debugging and tracing in Versal Adaptive SoCs, offering trace capture speeds up to 10 Gb/s and up to 14 GB of trace memory [19][20] Probing Flows & Methodologies - HDL instantiation flow involves manual customization and connection of debug cores directly in the HDL design source, requiring re-running synthesis and implementation [22][23] - Netlist insertion flow inserts ILA cores directly into the netlist, eliminating design resynthesis and allowing probing at various design levels [23][24] - Incremental Compile Flow allows modifying debug cores while reusing 95% of prior placement and routing results [36] - ECO Flow focuses on replacing existing debug nets with minimal changes, preserving previous implementation results [37][38] ChipScoPy - ChipScoPy provides a Python interface to program and debug Versal devices, with a 100% Python code base available on githubcom [39] - ChipScoPy enables high-level control of Versal debug IPs, allowing developers to control and communicate with cores like ILA and VIO [39][40]