V
Vilvox
Guest
Hello,
I try to learn VHDL and conception flow but i still hve some understanding
problemes ?
* As far as I know, between functionnal and timing simulation, there is the
synthesis step, where we give frequency and hardware specifications.
But what are practical differences for simulation before and after synthesis
?
* Behavioural coding is a way to code state machine (Mealy for exemple) in
VHDL, from a state graph.
But where does the RTL coding comes among this coding ?
The transformation from VHDL code to electronic elements (flip-flop, NAND
gates, ...) is not automatic with CAD tools ?
To sum up, does the designer still have to deal with the flip-flop and gates
description ?
Thanks for your time,
I try to learn VHDL and conception flow but i still hve some understanding
problemes ?
* As far as I know, between functionnal and timing simulation, there is the
synthesis step, where we give frequency and hardware specifications.
But what are practical differences for simulation before and after synthesis
?
* Behavioural coding is a way to code state machine (Mealy for exemple) in
VHDL, from a state graph.
But where does the RTL coding comes among this coding ?
The transformation from VHDL code to electronic elements (flip-flop, NAND
gates, ...) is not automatic with CAD tools ?
To sum up, does the designer still have to deal with the flip-flop and gates
description ?
Thanks for your time,