PCB Technical - Board-level PCB design software and circuit system​

Board-level PCB design software and circuit system

Cadence is a large-scale EDA software, which can complete almost all aspects of electronic design, including ASIC design, FPGA design and PCB board design. Cadence has absolute advantages in simulation, PCB design, automatic placement and routing, layout design and verification. Cadence contains more tools that almost include all aspects of EDA design. The following mainly introduces its board-level circuit design system.

The board-level circuit design system includes schematic input, generation, analog-digital/hybrid circuit simulation, FPGA design, PCB editing and automatic placement and routing MCM circuit design, high-speed PCB layout design simulation, and so on.

These include:

A. Concept HDL (schematic diagram design input tool)

The Concept HDL schematic design input tool is Cadence's principle design input system. It provides users with a comprehensive, efficient and flexible schematic design environment with powerful operation and editing functions. Designers can complete the entire schematic design process in the HDL environment, and can input hierarchical schematics and planar schematics, check schematics, generate bills of materials, and generate netlists. HDL can also be integrated with Allegro tools into one project, which can easily realize the import of schematic diagrams to PCB, and interactive operations such as PCB change back-annotation to schematic diagrams.

B. Check Plus HDL (schematic diagram design rule check tool)

Check Plus HDL schematic design rule checking tool is Cadence's schematic design rule checking standard. Can highlight all the irregularities in the PCB design schematic diagram for the user, and give the reasons.

C, Allegro Expert (expert-level PCB layout editing tool)

Allegro has a complete Constraint setting. Users only need to set the wiring rules as required, and the wiring design requirements can be met without violating DRC during wiring, thus saving tedious manual inspection time and improving work efficiency! It can also define parameters such as minimum line width or line length to meet the various requirements of today's high-speed circuit board wiring.

D, SPECTRA Expert AutoRouter (expert-level PCB automatic routing tool)

Automatic wiring means that after setting constraints and applying the rules created, automatic wiring will achieve results similar to expectations. Of course, some sorting work may be required, and space for other signals and network wiring needs to be ensured. After a part of the design is completed, fix it to prevent it from being affected by the subsequent wiring process.

E, SigNoise (signal-to-noise analysis tool)

The signal-to-noise ratio is the ratio of the signal voltage to the noise voltage, and is usually represented by the symbol s/n. In general, the signal voltage is much higher than the noise voltage, and the ratio is very large. The unit of the signal-to-noise ratio is expressed in db. The SigNoise signal-to-noise analysis tool is used to analyze the cause of the signal-to-noise ratio in the circuit.

F. EMControl (Electromagnetic Compatibility Check Tool)

Electromagnetic compatibility (EMC) refers to the ability of a device or system to operate in compliance with the requirements in its electromagnetic environment and not produce intolerable electromagnetic interference to any device in its environment. Therefore, EMC includes two requirements: on the one hand, the electromagnetic interference generated by the equipment to the environment during normal operation cannot exceed a certain limit; on the other hand, it means that the equipment has a certain degree of electromagnetic interference in the environment. The degree of immunity, that is, electromagnetic susceptibility. EMControl is an electromagnetic compatibility check tool for designing circuits.

G. Synplify FPGA / CPLD (synthesis tool)

Synplify Pro is a high-performance FPGA synthesis tool that provides an excellent HDL synthesis solution for complex programmable logic design. It includes the BEST algorithm to optimize the design as a whole; automatically Retiming the critical path can improve performance by up to 25%; Supports mixed design input of VHDL and Verilog, and supports input of netlist *.edn files; enhanced support for System Verilog; Pipeline function improves the performance of multipliers and ROMs; finite state machine optimizer can automatically find the best Coding method; interactive indexing between timing report and RTL view and RTL source code; automatic identification of RAM, avoiding complicated RAM instantiation.

H. Advanced Package Designer (Advanced MCM package design tool)

Features of MCM-D There are two hot topics in the field of microelectronic packaging today, one is BGA and the other is MCM. BGA first appeared as a form of monolithic packaging with extremely high packaging density. Its appearance has reduced the size of monolithic circuit boards a lot.