Versatile counter

Description

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.