Kuruvilla Varghese

Department of Electronic Systems Engineering (DESE),

Indian Institute of Science (IISc), Bangalore 560 012. India.

Tel: + 91 80 2293 3092. Email: kuru@iisc.ac.in.

Web: http://kuruvilla.dese.iisc.ac.in/

Area of Work

Computer Networks, Digital VLSI, Embedded Systems

Reconfigurable Computing Lab

High Performance Hardware Architectures

E3 231 (JAN) 2:1 Digital Systems Design with FPGAs

Introduction to Digital design; Hierarchical design, controller (FSM), case study, FSM issues, timing issues, pipelining, resource sharing, metastability, synchronization, MTBF Analysis, setup/hold time of various types of flip-flops, synchronization between multiple clock domains, reset recovery, proper resets. VHDL: different models, simulation cycles, process, concurrent and sequential statements, loops, delay models, library, packages, functions, procedures, coding for synthesis, test bench. FPGA: logic block and routing architecture, design methodology, special resources, Xilinx 7 Series FPGA architecture, programming FPGA, constraints, STA, timing closure, case study.

E3 245 (AUG) 2:1 Processor System Design

IIntroduction: Performance and Benchmarking, Basic Processor Architecture, Instruction Set Design, Datapath and Controller, Timing, Pipelining. CISC Processor Design: Architecture, Design. RISC Processor Design: single cycle implementation, multi cycle implementation, pipelined implementation, exception and hazards handling, RISC-V. Memory Hierarchy: Cache, Paging, TLB. Bus: Bus Topologies, AHB, APB, AXI Bus Protocols, Bus Interface.


NPTEL Video Course: Digital System Design with PLDs and FPGAs

Course at NPTEL Site

Course at YouTube



  1. Ajay S, Praveen V S and Kuruvilla Varghese, “An FPGA based Accelerator of the Bi-directional Wavefront Algorithm for Pairwise Sequence Alignment”,19th IEEE Asia Pacific Conference on Circuits and Systems (APCCAS 2023), Hyderabad, 19-22 November 2023.

  2. Sadhu Sai Ram and Kuruvilla Varghese, “Efficient Hardware Design of Parameterized Posit Multiplier and Posit Adder”,19th IEEE Asia Pacific Conference on Circuits and Systems (APCCAS 2023), Hyderabad, 19-22 November 2023.

  3. Bhanu Prasad A and Kuruvilla Varghese, “High Throughput Hardware Acceleration for Image Generation using HLS”,19th IEEE Asia Pacific Conference on Circuits and Systems (APCCAS 2023), Hyderabad, 19-22 November 2023.

  4. Madhu Ennampelli and Kuruvilla Varghese, “Resource Efficient TCAM Implementation using SRAM”, IEEE EDS Mini-Colloquium and 3rd International Conference on Micro/Nanoelectronics Devices, Circuits, and Systems (MNDCS-2023), NIT Silchar, Assam, India. 29-31 Jan 2023. (Honorable Mention Award)


  5. Sajin S, Shubham Sunil Garag, Anuj Phegade, Deepshikha Gusain, and Kuruvilla Varghese “Design of a Multi-Core Compatible Linux Bootable 64-bit Out-of-Order RISC-V Processor Core”, 2023 36th International Conference on VLSI Design and 2023 22nd International Conference on Embedded Systems (VLSID), 2023, Hyderabad, India, 8-12 Jan 2023.


  6. Ramakant Joshi, Kuruvilla Varghese, “High-Level Synthesis of Geant4 Particle Transport Application for FPGA” 25th Euromicro Conference on Digital System Design (DSD), 2022, pp. 75-83, DOI: 10.1109/DSD57027.2022.00020

  7. V. Naveen Chander, Kuruvilla Varghese, “A Soft RISC-V Vector Processor for Edge-AI”, 2022 35th International Conference on VLSI Design and 2022 21st International Conference on Embedded Systems (VLSID), 2022, pp. 263-268, DOI: 10.1109/VLSID2022.2022.00058
  8. Dola Ram, Suraj Panwar, Kuruvilla Varghese, ” Hardware Accelerator for Capsule Network based Reinforcement Learning”, 2022 35th International Conference on VLSI Design and 2022 21st International Conference on Embedded Systems (VLSID), 2022, pp. 162-167, DOI: 10.1109/VLSID2022.2022.00041 (Nripendra Nath Biswas Best Student Paper Award)

  9. A. Antony, Devi. A, and K. Varghese, “High Throughput Hardware for Hoeffding Tree Algorithm with Adaptive Naive Bayes Predictor,” 2021 6th International Conference for Convergence in Technology (I2CT), 2021, pp. 1-6, doi: 10.1109/I2CT51068.2021.9418100.
  10. Gokulan T, Akshay Muraleedharan, and Kuruvilla Varghese, “Design of a 32-bit, dual pipeline superscalar RISC-V processor on FPGA” Euromicro Conference on Digital System Design (DSD) 2020, Virtual Event, 26-28 August 2020, pp. 340-343, DOI: 10.1109/DSD51259.2020.00062
  11. https://ieeexplore.ieee.org/document/9217851
  12. A. Birari, P. Birla, K. Varghese and A. Bharadwaj, “A RISC-V ISA Compatible Processor IP,” 2020 24th International Symposium on VLSI Design and Test (VDAT), Bhubaneswar, India, 2020, pp. 1-6, DOI: 10.1109/VDAT50263.2020.9190558


  13. Nimish Shah, Paragkumar Chaudhari, and Kuruvilla Varghese, “Runtime Programmable and Memory Bandwidth Optimized FPGA-Based Coprocessor for Deep Convolutional Neural Network”, IEEE Transactions on Neural Networks and Learning Systems, Volume 29, Issue 12, pp. 5922-5934, December 2018, DOI: 10.1109/TNNLS.2018.2815085


  14. Sajna Remi Clere, Sachin Sethumadhavan, Kuruvilla Varghese, “FPGA Based Reconfigurable Coprocessor for Deep Convolutional Neural Network Training”, 2018 21st Euromicro Conference on Digital System Design (DSD), Prague, Czech Republic, August 2018, pp. 381-388, DOI: 10.1109/DSD.2018.00072


  15. Suseela Budi, Pradeep Gupta, Kuruvilla Varghese, Amrutur Bharadwaj, “A RISC-V ISA Compatible Processor IP for SoC”, 2018 International Symposium on Devices, Circuits and Systems (ISDCS), Indian Institute of Engineering Science and Technology, Shibpur, March 29-31 2018, pp. 1-5, Kolkata, India. DOI: 10.1109/ISDCS.2018.8379629


  16. A. Dey, S. Jose, K. Varghese and S. G. Srinivasa, “A High-throughput Clock-less Architecture for Soft-Output Viterbi Detection”, 60th IEEE International Midwest Symposium on Circuits and Systems, Boston, USA, Aug. 2017, pp. 779-782, DOI: 10.1109/MWSCAS.2017.8053039


  17. Kavya Sharat, Sumeet Bandishte, Kuruvilla Varghese, Amrutur Bharadwaj, “A Custom Designed RISC-V ISA Compatible Processor for SoC”, 21st International Symposium on VLSI Design and Test (VDAT-2017), 29 June – 2 July 2017, IIT Roorkee, India, 29 June – 2 July 2017, Communications in Computer and Information Science, vol 711. Springer, Singapore, pp. 570-577, DOI: https://doi.org/10.1007/978-981-10-7470-7_55


  18. Pradeep Gupta, Suseela Budi, Kuruvilla Varghese, and Amrutur Bhardwaj, “A RISC-V Compatible Processor Ip for SoC”, RISC-V International Conference, April 2017, IIT Madras, Chennai.


  19. Siddhartha B. Rai, Srinidhi M.S., Kuruvilla Varghese, and Srividhya R “Flow Control for Onboard Solid State Recorder” 4th International Conference on Electronics and Communication Systems, 24-25 Feb 2017, Coimbatore, India, pp. 65-69


  20. Saugata Datta, Kuruvilla Varghese, and Shayan Srinivasa, “A High Throughput Non-uniformly Quantized Binary SOVA Detector on FPGA”, 29th International Conference on VLSI Design (VLSID 2016), January 4-8, Kolkata, pp. 439-444.


  21. Anant Devi, Maulik Gandhi, Kuruvilla Varghese, and Dipanjan Gope, “Accelerating method of moments based package-board 3D parasitic extraction using FPGA” Microwave and Optical Technology Letters, Volume 58, Issue 4, pp. 776-783, April 2016


  22. Sriram Venkateshan, Alap Patel, and Kuruvilla Varghese, “Hybrid Working Set Algorithm for SVM Learning With a Kernel Coprocessor on FPGA”, IEEE Transactions on Very Large Scale Integration (VLSI) Systems, Vol. 23, No. 10, pp. 2221-2232, Oct. 2015


  23. Anant Devi, Maulik Gandhi, Kuruvilla Varghese, and Dipanjan Gope, “Hardware Accelerator for 3D Method of Moments based Parasitic Extraction”, The 2013 IEEE Electrical Design of Advanced Packaging & Systems (EDAPS) symposium, December 2013, Nara, Japan. pp. 100-103


  24. Karthikeyan P, Srijith Haridas, and Kuruvilla Varghese, “Transparent FPGA based Device for SQL DDoS Mitigation” International  Conference on Field-Programmable Technology 2013 (ICFTP 2013), December 2013, Kyoto, Japan. pp. 82-89


  25. Jimit Shah, K.S. Raghunandan, and Kuruvilla Varghese, “HD Resolution Intra Prediction Architecture for H.264 Decoder” 25th IEEE International Conference on VLSI Design VLSID 2012, January 2012, Hyderabad, India. pp.107 – 112


  26. Tejasvi Anand, Yagnesh Waghela, and Kuruvilla Varghese “A Scalable Network Port Scan Detection System on FPGA” IEEE International Conference on Field-Programmable Technology (FPT’11). December 2011, New Delhi, India. pp. 1-6


  27. Gandhi Arpit, Raghavendra Adiga and Kuruvilla Varghese, “Space Efficient Diagonal Linear Space Sequence Alignment” 10th IEEE International Conference on Bioinformatics and Bioengineering (BIBE 2010) 3 June 2010, Philadelphia, pp. 244-249


  28. Vrishali Vijay Nimbalkar, and Kuruvilla Varghese, ” In-Channel Flow Control Scheme for Network-on-Chip” 16th Euromicro Conference on Digital Systems Design (DSD 2010), September 2010, France, pp. 459-466


  29. Jimit Shah, Komanduri S. Raghunandan and Kuruvilla Varghese “Area Optimized H.264 Intra Prediction Architecture for 1080p HD Resolution”, 21st IEEE International Conference on Application-specific Systems, Architectures and Processors (ASAP 2010), July 2010, France, pp: 120-125


  30. Vikas.G, Joy Kuri, and Kuruvilla Varghese, “Power Optimal Network-on-Chip Interconnect Design”, 22nd IEEE International SOC Conference, September, 2009, Northern Ireland, UK, pp. 147-150


  31. Divyasree J, Rajashekar H, and Kuruvilla Varghese, “Dynamically Reconfigurable Regular Expression Matching Architecture” 20th IEEE International Conference on Application-specific Systems, Architectures and Processors 2008 (ASAP 2008), July 2008, Leuven, Belgium, pp. 120-125


  32. Gajanan Jedhe, Arun Ramamoorthy and Kuruvilla Varghese, “A Scalable High Throughput Firewall in FPGA”, The 16th Annual IEEE Symposium on Field-Programmable Custom Computing Machines, 2008 (FCCM’08), April 2008, California, USA, pp. 43-52