Stats

  • Replies 4
  • Subscribers 161
  • Views 12125
  • Members are here 0
More Content

change footprint without orcad capture schematic

ichliebedich

Hi all,

I need to change the footprint without orcad schematic.

for instance, there is a smd type usb footprint, I want to change this part to 5 pin header which mean same number of pins and nets

like this

regards.

  • You can export the netlist and edit the netlist to change to the footprint name. Then import the revised netlist. 

    You will need to export library files before importing netlist. 

  • Edit the pstchip.dat netlist file ; find the JEDEC_TYPE definition for the surface mount USB connector ; change that to the 5-pin header footprint name ; re-load the netlist (import logic). This will work as long as the 2 thru-hole pins are not numbered, as well as the outer 4 smd pins are not connections. If the 4 outer pads are for GND connections, this won't work, sorry.

  • in reply to CadAce2K

    there was no pstchip.dat file if I export the netlist file from allegro PCB, 

    I exported from the Allegro PCB with this option below

    which file do I need to edit and which variable do I need to edit?

  • in reply to ichliebedich

    There is another way to do it, completely within Allegro (BUT!!! the footprints have to have the same pincount, electrical pin count)

    - First place the new footprint in your design (PLACE/Manual)

    - Swap the 2 devices (Place/Swap/Components)

    - Unplace the old footprint

    - Using LOGIC/Part Logic you can assign the RefDes to the new footprint. You may have to play with the part logic table to get it to work, but it should swap to the new footprint.

    Again, the footprints have to have the same electrical pinout defined.

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.