DisplayPort™ 2:1 Multiplexer with Jitter Cleaning, DisplayPort v1.4a, Dual-mode compatible, with LTTPR command snooping

The PS8461E is an integrated DisplayPort 2:1 multiplexer that is compatible with DisplayPort 1.4a and dual-mode DisplayPort signaling.  An internal retimer circuit is used for jitter cleaning both native DisplayPort signaling and the TMDS signaling enabled by Dual-mode operation.  DisplayPort link rates up to 8.1Gbps are supported, and TMDS data rates up to 6Gbps are supported enabling the support of HDMI™ 2.0b operation up to 40K@60Hz.  When used for native DisplayPort signaling, through the use transparent repeater operation the PS8461E main link output swing and pre-emphasis levels will response to link training between the DisplayPort video Source and downstream Sink.  For LTTPR (Link Training Tunable PHY Repeater) operation, the PS8461E monitors the DisplayPort AUX Channel to snoop the LTTPR  DPCD register transactions.

When used with a dual-mode upstream Source, the PS8461E supports the Dual-mode AC coupled TMDS signaling that enables the support of DVI or HDMI Sink devices through the use of a downstream level shifting device such as a Dual-mode DP to HDMI adapter.

Features

  • Supports 2:1 multiplexing for Dual-mode DisplayPort signaling
  • Compliant to VESA® DisplayPort Standard version 1.4a including support for 1.62, 2.7, 5.4 and 8.1-Gbps link rates, up to four lanes
  • Supports intermediate link rates for eDP applications
  • Supports LTTPR command snooping
  • Automatic Link Training – no system level support needed
  • Compatible with dual-mode DisplayPort Source operation with a TMDS data rates up to 6Gbps
  • Jitter cleaning of both DisplayPort and TMDS signaling
  • Superior intra-pair and inter-pair de-skewing
  • Crystal Free operation
  • Programmable equalization adjustment to compensate for PCB, cable, and connector losses
  • Field proven transparent repeater function provides link training with the downstream DisplayPort device using AUX interception
  • Built-in AUX Channel and DDC combiner for upstream dual-mode Source device
  • Supports Source initiated power management through AUX channel
  • Automatic power down management
  • Device pin control and local I2C bus control options
  • 3.3V / 1.2V dual supply operation
  • 5x10mm 66-pin QFN RoHS compliant and halogen free package
  • 0° to 85°C and -40° to 85°C operating temperature range options

Applications

  • Notebook and desktop PC motherboards implementing switchable graphics
  • Notebook docking stations
  • Monitors