Portable Retina Display Driven by USB Type-C
Get Clearly Know about USB Type-C Connector
Get Clearly Know what we should do
Implementing DisplayPort without an analog switch/multiplexer
The Synopsys DesignWare USB-C 3.1/DisplayPort solution has a USB/DisplayPort comboPHY with a built-in digital multiplexer or crossbar switch that supports USB 3.1 Gen2 at 10Gbit/s and the HBR3 (HighBitRate3) variant of DisplayPort at 8.1Gbit/s. The digital crossbar switch (Figure 2) ensures the integrity of these high-bitrate signals.
Supporting high-resolution displays and Display Stream compression
The DesignWare USB-C 3.1/DisplayPort solution supports DisplayPort 1.3 and 1.4. The DisplayPort 1.3 implementation has four lanes of HBR3, to support 4K displays with RGB color representations and 60Hz or 90Hz frame rates, or 8K displays with YUV color representations and 30Hz frame rates.
To run displays with higher specifications demands the use of the visually lossless Display Stream Compression (DSC) standard. This is the main enhancement of DisplayPort 1.4 over 1.3, and is directly supported in the DesignWare USB-C 3.1/DisplayPort solution. Implementation takes a fairly high gate count and so DSC is not yet widely used, but it will probably be needed in high-resolution/high refresh-rate virtual- and augmented-reality applications.
Protecting premium content with HDCP 1.4 and 2.2
The DesignWare DisplayPort TX controller offers the HDCP 1.4 support necessary to protect HD and Full HD resolutions. Protecting 4K UHD and 8K video streams demands HDCP 2.2 support, which for security reasons is implemented in an Embedded Security Module outside the DisplayPort TX controller (see Figure 1).