SDAA101 September   2025 TDP142-Q1 , TDP2044 , TUSB1021-Q1 , TUSB1044 , TUSB1044A , TUSB1064-Q1 , TUSB1142 , TUSB1146 , TUSB521-Q1 , TUSB542 , TUSB544 , TUSB5461-Q1 , TUSB564 , TUSB564-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 What is USB?
    2. 1.2 What is USB Type-C and How is This Different From Previous USB Specifications?
    3. 1.3 What is DisplayPort?
    4. 1.4 What is DisplayPort Alt. Mode?
  5. 2USB Type-C Part Selection Guide
    1. 2.1 Standard USB Type-C Application
    2. 2.2 DisplayPort Alt. Mode Source Applications:
    3. 2.3 DisplayPort Only Applications
  6. 3Summary
  7. 4References

1.2 What is USB Type-C and How is This Different From Previous USB Specifications?

USB Type-C is a physical connector type that is symmetric across the x-axis and y-axis, meaning that there are two orientations of the cable that can be plugged into a receptacle. A USB device is required to function normally regardless of cable orientation; for this reason, the USB Type-C pinout includes a duplicate of each. The duplicate pins in a USB-C receptacle are shown in Figure 1-2.

USB Type-C Pinout Figure 1-2 USB Type-C Pinout

Pins A5 and B5 of a Type-C receptacle are Configuration Channel (CC) pins. The USB Type-C specification implemented the CC channels on the connector to detect the orientation of the cable. After detecting the cable orientation, a mux is used to route the data signals to the appropriate pins.