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FMx Cofiguration Tools

USB Type-C Connector Advantages and DisplayPort Pin Assignments

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About

One of the advantages of a USB Type-C connector is that it can be plugged in any orientation. The USB Type-C receptacle is expected to detect the orientation based on the voltages on CC line and use internal mux to route the signals properly. The USB Type-C plug does not have any in-built mechanism to handle the signal routing.

VESA defines different pin assignments on the USB Type-C connector when sending and receiving DisplayPort signaling. Six possible pin assignments are defined for USB Type-C configured to behave as a Display Source (DFP_D) – A, B, C, D, E, or F. Five possible pin assignments are defined for USB Type-C configured to behave as a Display Sink (UFP_D) – A, B, C, D, or E.

  • Pin Assignments A, B, C, and D are intended for use with USB Type-C to USB Type-C Cables and with adaptors from USB Type-C to other video standards such as VGA, DVI, HDMI.
  • Pin Assignments E and F are intended for use with adaptors from USB Type-C to DisplayPort plugs or receptacles.

For further details, please contact VESA for VESA DisplayPort Alt Mode on USB Type-C Standard

CYPD1120 can support both 4 lane Type-C to DP/mDP (pin assignment E) and Type-C to VGA/HDMI/DVI (pin assignment C). The default programming on the CYPD1120 supports both C and E pin assignments (C+E). VESA compliance requires that

  • A USB Type-C to DP/mDP 4 lane display adapter support only E pin configuration and
  • A USB Type-C to HDMI/VGA/DVI 4 lane display adapter support only C pin configuration.

Infineon provides FW and configuration files for supporting pin assignments C, E and C+E. Infineon’s EZ-PDTM Configuration Utility can be used to program parts with the right firmware and configuration settings.

Please refer to KBA203802 for steps on configuring the pin assignment on the USB Type-C connector based on your adapter.

One of the advantages of a USB Type-C connector is that it can be plugged in any orientation. The USB Type-C receptacle is expected to detect the orientation based on the voltages on CC line and use internal mux to route the signals properly. The USB Type-C plug does not have any in-built mechanism to handle the signal routing.

VESA defines different pin assignments on the USB Type-C connector when sending and receiving DisplayPort signaling. Six possible pin assignments are defined for USB Type-C configured to behave as a Display Source (DFP_D) – A, B, C, D, E, or F. Five possible pin assignments are defined for USB Type-C configured to behave as a Display Sink (UFP_D) – A, B, C, D, or E.

  • Pin Assignments A, B, C, and D are intended for use with USB Type-C to USB Type-C Cables and with adaptors from USB Type-C to other video standards such as VGA, DVI, HDMI.
  • Pin Assignments E and F are intended for use with adaptors from USB Type-C to DisplayPort plugs or receptacles.

For further details, please contact VESA for VESA DisplayPort Alt Mode on USB Type-C Standard

CYPD1120 can support both 4 lane Type-C to DP/mDP (pin assignment E) and Type-C to VGA/HDMI/DVI (pin assignment C). The default programming on the CYPD1120 supports both C and E pin assignments (C+E). VESA compliance requires that

  • A USB Type-C to DP/mDP 4 lane display adapter support only E pin configuration and
  • A USB Type-C to HDMI/VGA/DVI 4 lane display adapter support only C pin configuration.

Infineon provides FW and configuration files for supporting pin assignments C, E and C+E. Infineon’s EZ-PDTM Configuration Utility can be used to program parts with the right firmware and configuration settings.

Please refer to KBA203802 for steps on configuring the pin assignment on the USB Type-C connector based on your adapter.

Design resources

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