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0 pointsMobileVet6y ago0 comments

Considering the heavy emphasis on budget, it could very well have been on reduced cost. Is a single resistor expensive? No but each decision adds up and it may just be ingrained in the team's ethos.

Many times if we push something too hard, we apply the rule without questioning whether it truly makes sense in a particular situation.

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4 comments · 1 top-level

voidwtf6y ago· 3 in thread

In this case they directly shorted two pins together though. That would give me pause to ask why the two pins existed in the first place. Something that should have led to the conclusion the author reached about the configuration.

michaelt6y ago

  That would give me pause to
  ask why the two pins existed
  in the first place.

Bear in mind, the USB-C connector is designed to be rotationally symmetric - so you'll start your layout by paralleling up the four ground pins, and the four bus power pins, and the two pins for USB 2.0 negative and the two for USB 2.0 positive.

I can understand why it might get overlooked, when someone has paralleled up 12 pins in the last 5 minutes...

voidwtf6y ago

I can see now how one might end up in the position, still the spec schematic clearly shows two separate resistors. Curious either way :|

MobileVetOP6y ago

I personally agree and would have been curious myself.

That said, someone with less experience might have just said ‘oh cool, I can be clever and reduce our BOM’ and not given much thought to it.

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