power protection
15.1 Mobile phone fast charging PDTYPE-C interface protection
(USB PD fast charge 15W 27W 45W)
1. VBUS provides power for mobile phone charging
2. CC1/CC2 is the configuration channel（Configuration Channel）
Main functions of CC1/CC2 pin:
a. Detect the connection of data lines, distinguish the front and back insertion of data lines, and distinguish between master and slave devices
b. Configure VBUS (USB TYPE_C and USB Power Delivery modes are available)
c. When configuring other modes, such as audio accessories
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TX1/RX1 TX2/RX2 D+D-pin will be used in some schemes
TX1/RX1 TX2/RX2 is USB3.1 data transmission. At present, Type-c mobile phones only use one group
D+D - USB2.0 data transmission signal
See the table below for more large current electrostatic surge protection and small package ESD
