VHDL-AMS
191
The extensions to VHDL for VHDL-AMS can be summarized as
follows:
1. A new type of ports called TERMINALS – basically analog
pins.
2. A new type of TYPE called a NATURE that defines the rela-
tionship between analog pins and variables.
3. A new type of variable called a QUANTITY that is an ana-
log variable.
4. A new type of variable assignment that is used to define ana-
log equations that are solved simultaneously.
5. Differential equation operators for derivative (‘DOT) and
integration (‘INTEG) with respect to time.
6. IF statements for equations (IF USE).
7. Break statement to initialize the non-linear solver.
8. STEP LIMIT control for limiting ...