PS186 — DisplayPort 1.4a to HDMI 2.0b Protocol Converter

The PS186 is a DisplayPort™ v1.4a to HDMI™ 2.0b video interface converter ideal for cable adapters, docking stations, monitors, television receivers, other applications requiring video protocol conversion.  The input is a DP v1.4a compliant upstream facing port that accepts audio and display data, and the output is an HDMI 2.0b compliant downstream facing port.  In addition to accepting native DisplayPort, the PS186 can also be driven by a USB-C interface through the use DisplayPort Alt Mode, which is commonly supported by USB-C enabled devices, including Thunderbolt 3 devices and smartphones, that contain a video source or video pass-through.

In supporting DP v1.4a, the PS186 can accept compressed display data using DSC (Display Stream Compression) and a link rate up to HBR3 (8.1 Gbps).  Using the combination of DSC and HBR3, the PS186 only requires two DisplayPort main link lanes to provide full HDMI 2.0b output display resolution support including 4K 60 frames per second 4:4:4 video mode at 24 bits-per-pixel, as well as 4K HDR.  This provides an advantage for USB-C interface applications as this means only two USB-C high-speed channels are needed for DP Alt Mode, allowing the other two high-speed channels to be used for Gen 1 (5Gbps) or Gen 2 (10Gbps) SuperSpeed USB data.  This ability makes the PS186 ideal for USB-C enabled docking stations, mini-docks, or monitors that support both display data and USB data.

The PS186 provides anonymous, automatic operation enabled by an integrated microprocessor that uses an expensive external SPI ROM for configuration and microcode. The SPI ROM can be field-updated through the DisplayPort AUX channel or device I2C slave input. System control is also available through the I2C slave input, and an I2C master interface is available for external EDID and expansion functions. The PS186 fully supports both HDCP 1.4 and HDCP 2.2 content protection, including the HDCP repeater function, with integrated HDCP Rx & Tx keys.

Key Features

  • Input is compliant with DisplayPort v1.4a supporting:
    • Link rates of 1.62Gbps (RBR), 2.7Gbps (HBR), 5.4Gbps (HBR2), and 8.1Gbps (HBR3)
    • 1, 2 or 4 lane main link operation
    • DPCD 1.4 data structure
    • Horizontal Blanking Expansion operation
    • VESA Display Stream Compression Standard (DSC) v1.2a bitstream handling and FEC policy
    • High Dynamic Range (HDR) as per CTA-861.3-A through metadata transport
    • CEC Tunneling over AUX
    • RGB pixel formats at 6, 8, 10, and 12 bits per component (bpc)
    • YCbCr pixel formats of 4:4:4, 4:2:2 and 4:2:0 at 8, 10, and 12 bpc
    • Audio up to 8-channel LPCM, compressed audio (AC-3, DTS), HBR audio formats, and 192kHz audio frame rate up to 24-bit audio sample size
  • Output is compliant with HDMI 2.0b supporting
    • TMDS data rate up to 6Gpbs
    • Full resolution up to 4K 60fps using 4:4:4 video mode at 24 bpp
    • 4K HDR
    • TMDS scrambling for EMI/RFI reduction
    • SCDC (Status and Control Data Channel)
  • Internal format pixel format conversion capability
    • YCbCr 4:4:4 to YCbCr 4:2:0
    • YCbCr 4:4:4 to YCbCr 4:2:2
    • RGB to YCbCr4:4:4
    • YCbCr4:4:4 to RGB
    • Pass through of RGB or YCbCr 4:4:4, 4:2:2, and 4:2:0
  • Content protection
    • HDCP 2.2 and HDCP 1.4 compliant repeater capability with pre-programmed on-chip keys
  • On-chip microprocessor with SPI ROM interface
  • 1.2V Core Power Supply, 3.3V I/O Power Supply
  • 0°C to 85°C Ambient Operating Temperature Range
  • 56-pin 7x7mm QFN Halogen free RoHS package
  • ESD: HBM 8kV

Applications

  • DisplayPort to HDMI active protocol converters (dongles)
  • USB-C™ to HDMI protocol converters (using DisplayPort Alt Mode over USB-C)
  • Thunderbolt 3 to HDMI protocol converters (Thunderbolt 3 video source devices support both Thunderbolt and DisplayPort Alt Mode)
  • Docking stations with USB-C or DisplayPort input and HDMI output
  • Televisions with USB-C or DisplayPort input that require HDMI for video processing
  • Monitors with USB-C or DisplayPort input that require HDMI for video processing