COMPE 470L
Digital Logic Laboratory

Catalog Description:

Hands-on experience in characterization and application of standard digital integrated circuit devices. 

Credits: 1.0

Class Schedule: One lab session per week, 2 hour 40 minutes per session

Prerequisites by topic: Fundamentals on modeling and analysis of digital systems primarily at the logic gate level; combinational and sequential networks.

Prerequisites by course: EE330L , and CompE470

Course Objectives:

  1. Know good lab practices and safety rules.
  2. Understand basic Digital Logic design and debugging techniques.
  3. Understand the operation and usage of measurement instruments (DMM, power supplies, signal generator, and oscilloscopes).
  4. Know basic laboratory measurement techniques and ground connections.
  5. Model a digital design using hardware descriptive language (HDL) such as VHDL
  6. Design and model both combinatorial and synchronous sequential logic circuits including finite state machines(FSM), arithmetic logic, data/control path using VHDL
  7. Use a computer aided design tool (such as Xilinx Inc. ISE) to model digital design using VHDL for simulation, synthesis and timing analysis of digital systems targeting a programmable logic device such as a PLD/FPGA
  8. Design test harnesses to simulate/analyze the digital design at both behavioral model level and post-synthesized model level using an industry standard simulation verification tool such as Modelsim
  9. Download/reconfigure the FPGA with the bit file generated after synthesis and verified
  10. Learn to record experimental data and write laboratory reports.

Textbooks and References:

  1. Kenneth L. Short, VHDL for Engineers, Prentice Hall, 2009.
  2. P. J. Ashenden, The Designer's Guide to VHDL, 2nd Ed., Morgan Kaufmann, 2001.
  3. S. Yalamanchili, Introductory VHDL from Simulation to Synthesis, Prentice-Hall, 2001.
  4. Roth, Fundamentals of Logic Design, 5th edition, Thomson, 2004.
  5. J. F. Wakerly; Digital Design: Principles and Practices 3rd Ed. Prentice Hall, 2001.

 

Topics Covered: Individual and Group Projects that are completed using CAD tools and logical implementation onto FPGA and addressing the following :

  1. Good lab practices and proper ground connections
  2. Experiment on “Seven Segment Display”
    • Design 4-bit counters, Modes of operation: count up, count down and 4-digit code display
    • Time multiplex the data to fours seven segment LED display using a shared data bus
    • LED should display the counting sequence in hexadecimal or decimal format
    • Display should be flicker free
  3. Experiment on “PS/2 Keyboard Driver”
    • Display keyboard scan codes from ps/2 interface on the seven segment display
    • Modes of operation: Most recent keycode or store and display any of the previous 4 keycodes
    • Manual switch to choose between modes of operation
    • Read all key presses from the ps/2 keyboard
    • Display should be flicker free
  4. Experiment on “VGA Monitor Driver”
    • Display at least 16 different color patters on the VGA monitor
    • Design to display for a minimum monitor resolution of 640x480 pixels (VESA compliant)
    • Monitor display pattern must never flicker and be stable until another pattern is activated
    • Patterns must be representative of the available bit depths possible (3-bit, 8-bit, 24bits, etc.,)
    • The display pattern selection my be driven on board or from the keyboard input
  5. Experiment on “UART Transmitter”
    • Design and implement asynchronous serial transmitter which takes keyboard input and transmits that data as a serial readable signal
    • ps/2 compliant keyboard interface
    • Minimum baud rate of 115200 bps with optional parity and 1 or 2 stop bits
    • Transmission shall adhere to RS232C standard using generic SCI
    • Serial output shall be connected to PC serial terminal (miniterminal or Hyperterminal)
  6. Experiment on “Memory Chip Interface”
    • Design and implement to store data from keyboard input on to an off-chip memory (SRAM)
    • Clock synchronous Read and write data from the external memory
    • Read data from memory and display it using the PC serial terminal (miniterminal or Hyperterminal)

Prepared by: Dr.Premanand Chandramani
Date of Preparation: 03/11/2009