Old question but I thought I would add a comment for this since I was searching for DRC information and saw the question.
I don't believe there is a perfect type selection for these pins that will work in all uses. I would suggest assigning pin type = Power since it aligns with the datasheet description (VEE). If a schematic designer chooses to connect these pins to Ground the pin types can be changed at the block value from pin type = Power to pin type = Ground. This should eliminate the DRC warning for that design and connectivity.
Please post a link to your idea, Brian, so that others can vote on it. Thanks!
That is a good question. At this time I would set it to ground at the symbol level. We actually do not use power at the block level but use analog instead. This is because all power supply pins are then considered swappable in the layout. See the following for reference:
What I would like to see is the ability to set the pin type at the symbol level in the schematic for the schematic DRC. At the moment you can set it in the schematic, but that value is not used for the schematic DRC or anything else as far as I can tell. There is currently a defect open on this problem.
ASSOCIATED DEFECT REPORT
Pin Type overload is ignored by Verify (Regression w.r.t. 2005)
OCTOBER 09, 2018|#01005216|Postponed|Not Scheduled
If this were fixed, I would say just set the correct value for the instance. We should have a way to vote on getting this fixed!
we use analog for those pins to avoid pin mapper create a separate gate (creating mess when there is fracture symbol)