High-Performance DisplayPort Gen2 2-1 Multiplexer

CBTL06DP212EE

CBTL06DP212 is a high performance multi-channel Generation 2 multiplexer meant for DisplayPort (DP) v1.2, v1.1a or Embedded DisplayPort applications operating at data rate of 1.62 Gbit/s, 2.7 Gbit/s or 5.4 Gbit/s. It is designed using NXP® proprietary high-bandwidth pass-gate technology and it can be used for 1 : 2 switching or 2 : 1 multiplexing of four high-speed differential AC-coupled DP channels. Further, it is capable of switching/multiplexing of Hot Plug Detect (HPD) signal as well as Auxiliary (AUX) and Display Data Channel (DDC) signals. In order to support GPUs/CPUs that have dedicated AUX and DDC I/Os, CBTL06DP212 provides an additional level of multiplexing of AUX and DDC signals delivering true flexibility and choice.

A typical application of CBTL06DP212 is on motherboards where one of two GPU DisplayPort sources needs to be selected to connect to a DisplayPort sink device or connector. A controller chip selects which path to use by setting a select signal HIGH or LOW. Due to the bidirectional nature of the signal paths, CBTL06DP212 can also be used in the reverse topology, e.g., to connect one display source device to one of two display sink devices or connectors.

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Block Diagram

CBTL06DP212 Block Diagram

CBTL06DP212 Block Diagram
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Features

  • 1 : 2 switching or 2 : 1 multiplexing of DisplayPort (v1.2 - 5.4 Gbit/s) signals
    • 4 high-speed differential channels with 2 : 1 multiplexing/switching for DisplayPort main link signals
    • 1 channel with 4 : 1 multiplexing/switching for AUX or DDC signals
    • 1 channel with 2 : 1 multiplexing/switching for HPD signal
  • High-bandwidth: 5 GHz at -3 dB
  • Low insertion loss:
    • -0.5 dB at 100 MHz
    • -3 dB at 5 GHz
  • Low crosstalk: -35 dB at 3 GHz
  • Low off-state isolation: -30 dB at 3 GHz
  • Low return loss: -8 dB at 3 GHz
  • Very low intra-pair skew (5 ps typical)
  • Very low inter-pair skew (< 80 ps)
  • Switch/multiplexer position select CMOS input
  • DDC and AUX ports tolerant to being pulled to +5 V via 2.2 kΩ resistor
    • Supports HDMI/DVI incorrect dongle connection
  • Single 3.3 V power supply
  • Operation current of 2 mA typical
  • ESD 8 kV HBM, 1 kV CDM
  • ESD 2 kV HBM, 500 V CDM for control pins
  • Available in 5 mm × 5 mm, 0.5 mm ball pitch TFBGA48 package

Target Applications

  • Motherboard applications requiring DisplayPort and PCI Express switching/multiplexing
  • Docking stations
  • Notebook computers
  • Chip sets requiring flexible allocation of PCI Express or DisplayPort I/O pins to board connectors

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