USB Type-C / DisplayPort 1.4 MST Hub

Description

The KTM5020 is an advanced DisplayPort1.4a MST hub with an integrated USB type-C de-multiplexer, targeted primarily for Mobile Notebook accessories and display applications. This device functions as a multi-stream audio-video splitter and protocol converter with an HDCP1.x/ HDCP2.3 repeater supporting both compressed (DSC) and uncompressed AV streams.

KTM5020 has a DP alt-mode capable USB Type-C Upstream Facing Port (UFP). The four high-speed lanes of UFP can receive DP1.4a MST audio-video and USB3.2 Gen2 data streams simultaneously. The input lane mapping is flexible and meets standard DP or the USB Type-C connector with flip orientation requirements. The incoming DP and USB signals are de-multiplexed, retimed, and transmitted on the Downstream Facing Ports (DFP). The KTM5020 consists of three AC coupled DP/DP++ or DC coupled HDMI/DVI DFPs, each with four high-speed lanes and one USB port with USB3.2 TX and RX pair. The Stream Routing Logic in KTM5020 allows flexible routing of incoming DP MST stream converted into any combination of MST or SST streams on any of the DFP video ports with link rate and lane count change option. Also, the SST stream can be replicated on two or more DFP ports. In addition, the DP SST stream can be converted into an HDMI or DVI output (TMDS signal format).

The combo receiver in KTM5020 supports all DP standard data rates up to HBR3 (8.1 Gbps/lane) and USB3.2 Gen1 (5.0 Gbps) and Gen2 (10.0 Gbps). The dual-mode (DP++) transmitters support DP standard data rates up to 8.1 Gbps/lane and TMDS data rates up to 6.0 Gbps/lane.

Product Family Table

Features KTM5000 KTM5010 KTM5020 KTM5030
Input DP
(4 Lanes)		 DP
(4 Lanes)		 USB-C
(DP alt-mode)
(DP 4 lanes OR 2 lanes DP and 2 lanes USB3.2)		 USB-C
(DP alt-mode)
(DP 4 lanes OR 2 lanes DP and 2 lanes USB3.2)
Outputs 3x DP++
(DP or HDMI)		 3x DP++
(DP or HDMI)		 3x DP++
(DP or HDMI)
1x USB3.2		 3x DP++
(DP or HDMI)
1x USB3.2
USB De-mux & Re-timer No No Yes Yes
HDCP2.2 Yes Yes Yes Yes
HDR, Pixel Processor Yes Yes No Yes
DSC & FEC No Yes No Yes

Features

  • USB Type-C DisplayPort Alt-mode de-mux
  • DisplayPort® (DP) ver.1.4a compliant receiver
  • Triple DP1.4a / HDMI2.0b (DP++) transmitters
  • Triple DP++ TX PHY 1.62/2.7/5.4/8.1 Gbps/lane * 4 lanes each
  • HDMI 2.1 Features
  • USB3.2 compliant re-timer
  • Video processing
  • Max video resolution and color depth on DP output uncompressed
    • 5K3K60Hz, RGB/YCbCr444, 8 bpc
    • 8K4K60Hz, YCbCr420 up to 8 bpc
    • 4K2K120Hz, RGB/YCbCr444, 8 bpc
  • Max video resolution and color depth on DP output
    • 8K4K60Hz, RGB/YCC444 up to 8 bpc
    • 5K3K60Hz, RGB/YCbCr444, 12 bpc
    • 4x 4K2K60Hz, RGB/YCbCr444, 8 bpc
  • Max video resolution and color depth on HDMI TX
    • 4Kp60Hz, RGB/YCbCr444, 8 bpc
    • 4Kp60Hz, YCbCr420, up to 16 bpc
    • 4Kp30Hz, RGB/YCbCr444, up to 16 bpc
  • Audio processing

Applications

  • Mobile PC docking stations
  • Dongles
  • MST video hubs
  • AR / VR devices
  • High end displays such as digital signage
  • Daisy-chain monitors

Key Electrical Specifications

Part Number Description Package Advantages
KTM5020 USB Type-C / DisplayPort 1.4 MST Hub LFBGA1212-289 Single-chip, highly integrated, low-power and high-performance USB Type-C / DP 1.4a Alt-Mode MST HUB with three configurable DP 1.4a or HDMI 2.0b (DP++) outputs and integrated retimer. Supports adaptive Sync.

Functional Block Diagram

KTM5020