
USB
Type-C and Power Delivery
UM2191
14/55
DocID030479 Rev 2
Figure 7: Message flow during power negotiation
1.10
Full-featured Type-
C™ cable and V
CONN
supply
Full-featured Type-
C™ cables are Type-C™ to Type-C™ cables that support USB2.0 and
USB3.1 data operation, and include sideband use (SBU) wires.
All USB full-featured Type-C cables must be electronically marked and must provide 800
Ω
to 1.2
kΩ impedance (Ra) that connects the assigned V
CONN
pin to ground.
When a full-featured cable is attached to a source, the source must provide a V
CONN
(5 V
default) to supply it (valid voltage range is 3 V to 5.5 V).
Up to 1 W may be drawn from V
CONN
to power the ICs in the plug, necessary to implement
electronically-marked cables and V
CONN
-powered accessories.