Stats

  • State Not Answered
  • Replies 2
  • Subscribers 44
  • Views 466
  • Members are here 0
More Content

Make Power pin as No Connect

Nikhiln1

Hi,

I'm using component with multiple power pins and multiple voltages in the same design. There are multiple of these components, different components are using different power pins with different voltages. I want to assign net names to power pins manually and make some as NC without any net name. I'm unable to make any power pins as NC. It is considering pin names as net names and connecting multiple parts with same pin names together and also DRC error (QUESTION(ORCAP-1589): Net has two or more aliases - possible short?) is showing for the pins assigned different net names.

Is there any way to make power pins as NC or disable auto assign of net names to power pins.

  • oldmouldy
    0

    Pins of Type Power cannot be unconnected in OrCAD Capture. If you need Pins to have "flexible" connections, use a different Pin Type.

  • avant
    0

    As oldmouldy said, use another pin type such as input for power pins.

    This has been broken for many, many years. I've seen plenty of designs with errors due to power pin nets inheriting the pin name.

    I design a lot of memory boards with balanced T-type topologies. Using I/O as the pin type for the memory pins causes "All drivers/receivers" constraint definition to go haywire: each net has multiple random drivers.

    I advise the engineers creating symbols to define all pins as input.

    Pretty silly for something like this to be broken for so long.

Cadence Guidelines

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.