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Verilog, standardized as IEEE 1364, is a hardware description language (HDL) used to model electronic systems.It is most commonly used in the design and verification of digital circuits, with the highest level of abstraction being at the register-transfer level.
Combinational logic performs all the logical functions in the circuit and it typically consists of logic gates. For example, a very simple synchronous circuit is shown in the figure. The inverter is connected from the output, Q, of a register to the register's input, D, to create a circuit that changes its state on each rising edge of the clock ...
Verilog-A is an industry standard modeling language for analog circuits. It is the continuous-time subset of Verilog-AMS . A few commercial applications may export MEMS designs in Verilog-A format.
Download as PDF; Printable version; ... Quartus Prime includes an implementation of VHDL and Verilog for hardware description, visual editing of logic circuits, ...
Initially, Verilog and VHDL were used to document and simulate circuit designs already captured and described in another form (such as schematic files). HDL simulation enabled engineers to work at a higher level of abstraction than simulation at the schematic level, and thus increased design capacity from hundreds of transistors to thousands.
Two-level logic circuits are of limited importance in a very-large-scale integration (VLSI) design; most designs use multiple levels of logic. Almost any circuit representation in RTL or Behavioural Description is a multi-level representation. An early system that was used to design multilevel circuits was LSS from IBM.
Verilog-AMS is an industry standard modeling language for mixed signal circuits. It provides both continuous-time and event-driven modeling semantics, and so is suitable for analog, digital, and mixed analog/digital circuits. It is particularly well suited for verification of very complex analog, mixed-signal and RF integrated circuits. [5]
A bit type is a variable-width two-state type that works much like logic. Two-state types lack the X and Z metavalues of classical Verilog; working with these types may result in faster simulation. Structures and unions work much like they do in the C programming language. SystemVerilog enhancements include the packed attribute and the tagged ...