Post #3289087
2026-06-07 18:01 UTC
@isagalaev@mastodon.social @valpackett@social.treehouse.systems A USB-C device is required by the spec to include two resistors on the CC1/CC2 signal lines to declare itself to be a USB-powered device, with current consumption controlled by resistor values combinations, this is in contrary to the legacy USB-A spec which used resistors on D+/D- to signal charging status. If a vendor just replaced the USB-A to USB-C, chargers will not enable power output.
Replies (1)
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@bugwhisperer@blahaj.zone 2026-06-07 21:21
@niconiconi@mk.absturztau.be @valpackett@social.treehouse.systems@blahaj.zone @isagalaev@mastodon.social ahhh! this makes sense! thanks! just looked over usb-A & C datasheets and used in kiCAD this week for first time. :neocat_book: #learning