Versatile Counter - Binary, Gray, or LSFR Counter

A versatile counter that can be defined as a binary, gray or LFSR counter. Usage include baudrate generator, address generator for FIFO and much more.

As a user you edit a define file to make the counter fit your project demands. You the generate a tailored counter. The performance and area can hereby be optimezed for the given application

Pros and cons with different types of counter

• LFSR
  • extremely low area usage
  • high performance
  • one cycle shorter count cycle compared to binary versions
  • typically used for interval timer and as adress generator for FIFO
• Binary
  • The standard type, usefule for various types of implementation
• Gray
  • The Gray type counter toggles only one bit per update
  • Implemented as a normal binary counter with an extra output stage converting the state to Gray encoding
  • Typical usage is adress generator for asynchroinous FIFOs

This module is written in Verilog and uses pre processor commands.