Hardware Description Languages

1
Hardware Description Languages
Drawing of circuit schematics is not practical
for circuits containing more than few tens of
gates.
We need a way to just describe the circuit itself
what are the inputs and outputs, what
components exist, and what are the connections.
2
Combinatorial Logic
VHDL
3
VHDL supports the ability to describe the
internals of a design as behavior rather than as
a circuit.
4
Sequential Logic
Resister
Oscillator
5
Controller
6
RTL Design Using VHDL
7
Different HDLs

• VHDL
• Verilog
• SystemC

Modern digital design relies heavily on the use
of HDLs at all stages of design.
The design process for today's billion-transistor
digital systems becomes a more programming based
process than before and programming skills are
important!