Phased logic makes it easy to build systems
that behave like cooperating finite state machines governed
by a common clock.
- Phased logic is a new asynchronous circuit form that
is completely insensitive to gate and wire delays but
that has the synchronous behavior of a clocked system.
- A phased logic system is specified using a traditional gate
netlist like those created for clocked systems.
- The gates in the netlist become special phased logic
gates that operate directly on dual-rail encoded signals.
The clock network in the netlist is replaced by
localized feedback signals between gates.
- Regular CAD tools are used for the entire design process
except for the final, automated addition of the feedback
signals.
