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Design

The basic steps in the design process are as follows. Your design must be complete and fully documented as part of the PREPARATION.

1.

Your block diagram, showing in detail your modules, signals, etc. Your design must include a controller state machine.

2.

A top level schematic diagram, reflecting your block diagram.

3.

Your designs for your modules, including detailed state diagrams for all state machines.

4.

VHDL code or schematic diagrams for your modules.

It is suggested you use the state editor to produce VHDL code for the controller, and you can use a cascade of four synchronous decade counters to create a schematic for your timer module.

A decade counter such as Xilinx schematic part CD4LE can be used in the design of the timer module.

5.

Simulation testing of your design.

6.

Revision of your design as needed: does it meet the specs?

7.

Include all calculations, schematic drawings, VHDL listings and simulation waveforms in your notebooks.

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