Cadence Allegro PCB design steps and methods?

Cadence Allegro PCB design steps and methods?

Cadence Allegro is a commonly used software in PCB design, with excellent wiring and extrusion capabilities Become a more complex motherboard design software Today we will talk about its main design points and processes:

Allegro PCB design mainly includes the following steps and key points:

Preparation work:

New Folder: In the newly created large folder, create three new folders to store PCB design files, packaging files, and schematic files.

Open PCB Editor: Create a new project in Allegro PCB Editor and name it 1.

Prepare device packaging and netlist: Device packaging can be drawn by oneself, extracted from other PCB projects, or downloaded from websites, and netlist 1 can be exported through schematics.

Import:

Import. dra and. bsm files, frame.dxf files, through-hole files, netlist files, and color 1.

Layout:

Quick placement of components: Quickly place components according to circuit requirements.

Selective display: Display different components and levels as needed.

Modify grid density and frame size: Adjust grid density and frame size according to design requirements.

Wiring:

Pre wiring operation: Make necessary pre wiring preparations, such as repairing wires and adding 1 equal length rule.

Push lines and vias: Ensure the spacing between lines and the setting of vias.

Copper laying and automatic wiring: After completing the wiring, proceed with copper laying and automatic wiring.

Subsequent inspection and adjustment:

Status check: Check the overall status of the design.

Dimensioning and Character Adjustment: Ensure that all dimensions and characters comply with design requirements 1.

File export:

Export the designed PCB file to an appropriate format for subsequent production and testing.

Common problems and solutions:

The right option viewport disappears: it can be restored to 1 through the toolbar settings.

Differential lines cannot run simultaneously: Check if the differential line settings are correct and ensure that the design of the differential pair meets the specifications.

Low version Allegro cannot open high version files: software upgrade or compatibility mode 1 is required.

Missing solder pad files for placing devices: Check if the device packaging is complete and ensure that all solder pad files have been imported correctly