C-based Design: High-Level Synthesis with the Vivado HLx Tool

The course provides a thorough introduction to the Vivado High-Level Synthesis (HLS) tool. This course covers synthesis strategies, features, improving throughput, area, interface creation, latency, testbench coding, and coding tips. Utilize the Vivado HLS tool to optimize code for high-speed performance in an embedded environment and download for in-circuit validation.

Skills Gained

After completing this comprehensive training, you will know how to:

  • Enhance productivity by using the Vivado HLS tool
  • Describe the high-level synthesis flow
  • Use the Vivado tool HLS for a first project
  • Identify the importance of the testbench
  • Use directives to improve performance and area and select RTL interfaces
  • Identify common coding pitfalls as well as methods for improving code for RTL/hardware
  • Perform system-level integration of IP generated by the Vivado HLS tool
  • Describe how to use OpenCV functions in the Vivado HLS tool

Course Outline

Day 1

  • Introduction to High-Level Synthesis
    Overview of the High-level Synthesis (HLS), Vivado HLS tool flow, and the verification advantage.
  • Basics of the Vivado HLS Tool
    Explore the basics of high-level synthesis and the Vivado HLS tool.
  • Design Exploration with Directives
    Explore different optimization techniques that can improve the design performance.
  • Vivado HLS Tool Command Line Interface
    Describes the Vivado HLS tool flow in command prompt mode.
  • Introduction to HLS UltraFast® Design Methodology
    Introduces the methodology guidelines covered in this course and the HLS UltraFast® Design Methodology steps.
  • Introduction to I/O Interfaces
    Explains interfaces such as block-level and port-level protocols abstracted by the Vivado HLS tool from the C design.
  • Block-Level Protocols
    Explains the different types of block-level protocols abstracted by the Vivado HLS tool.
  • Port-Level Protocols
    Describes the port-level interface protocols abstracted by the Vivado HLS tool from the C design.
  • Port-Level Protocols: AXI4 Interfaces
    Explains the different AXI interfaces (such as AXI4-Master, AXI4-Lite (Slave) and AXI4-Stream) supported by the Vivado HLS tool.
  • Port-Level Protocols: Memory Interfaces
    Describes the Memory Interface port-level protocols (such as BRAM, FIFO) abstracted by the Vivado HLS tool from the C design.
  • Port-Level Protocols: Bus Protocol
    Explains the bus protocol supported by the Vivado HLS tool.
  • Pipeline for Performance: PIPELINE
    Describes the PIPELINE directive for improving the throughput of a design.

Day 2

  • Pipeline for Performance: DATAFLOW
    Describes the DATAFLOW directive for improving the throughput of a design by pipelining the functions to executes as soon as possible.
  • Optimizing Structures for Performance
    Learn the performance limitations caused by arrays in your design. You will also learn some optimization techniques to handle arrays for improving performance.
  • Data Pack and Data Dependencies
    Learn how to use DATA_PACK and DEPENDENCE directives to overcome the limitations caused by structures and loops in the design.
  • Vivado HLS Tool Default Behavior: Latency
    Describes the default behavior of the Vivado HLS tool on latency and throughput.
  • Reduce Latency
    Describes how to optimize the C design to improve latency.
  • Improving Area
    Describes different methods for improving resource utilization and explains how some of the directives have impact on the area utilization.
  • Introduction to HLx Design Flow
    Describes the traditional RTL flow versus the Vivado HLx design flow.
  • HLS vs. SDSoC® Development Environment Flow
    Describes the HLS flow versus the SDSoC® development environment flow.
  • Vivado HLS Tool: C Code
    Describes the Vivado HLS tool support for the C/C++ languages, as well as arbitrary precision data types.
  • Hardware Modeling
    Explains hardware modeling with streaming data types and shift register implementation using the ap_shift_reg class.
  • OpenCV Libraries
    Explains the OpenCV design flow and the Vivado HLS tool support.
  • Pointers
    Explains the use of pointers in the design and workarounds for some of the limitations.

Scheduled Classes

Instructor-led Web Based Training
6/29/2021 – 6/30/2021

Education Investment Options

Standard Registration
Standard Registration
18 Training Credits
Advanced Registration
Advanced Registration
16 Training Credits
Basic Follow-on Coaching
Comprehensive Follow-on Coaching

  • To qualify for the Advanced Registration Price, full payment must be received 21 days prior to the first day of class.
  • Basic follow-on coaching includes 2 hours (max 2 calls)
  • Comprehensive follow-on coaching includes 10 hours (max 5 calls)
  • Follow-on Coaching must be purchased at time of registration.


Training Duration:

2 Days

Who should attend:

Software and hardware engineers looking to utilize high-level synthesis


  • C, C++, or System C knowledge
  • High-level synthesis for software engineers OR high-level synthesis for hardware engineers

Version: 2021-03-17_0932