CBTL04DP211BS
DisplayPort的2 ： 1多路复用器 DisplayPort 2 : 1 multiplexer
Overview
CBTL04DP211 is an Embedded DisplayPort multiplexer for DisplayPort v1.1a switching and multiplexing applications on PC platforms. It is capable of 1 : 2 switching or 2 : 1 multiplexing of 2-lane DisplayPort Main Link signals, using high-bandwidth pass-gate technology. Also, it can switch/multiplex Hot Plug Detect HPD signal and AUX signals, for a total of four channels on the display side.
To facilitate DisplayPort switching/multiplexing scheme on PC platforms suitably, CBTL04DP211 provides two separate selection pins GPU_SEL, AUX_SEL. The selection pin GPU_SEL performs switching from one Main Link to another Main Link. HPD signals will also be switched using the same selection pin. A separate select pin AUX_SEL provides additional selection between two AUX channels such that the AUX channel selection is independent of the Main Link and HPD signal selection.
A typical application of CBTL04DP211 is on motherboards where one of two GPU/CPU display 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 non-directional nature of the signal paths which use high-bandwidth pass-gate technology, the CBTL04DP211 can also be used in the reverse topology, e.g., to connect one DisplayPort source device to one of two DisplayPort sink devices or connectors.
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## Features
* Supports DisplayPort v1.1a: 1.62 Gbit/s, 2.7 Gbit/s
* Supports Embedded DisplayPort v1.2: 1.62 Gbit/s, 2.7 Gbit/s
* Supports 1-lane, 2-lane Main Link operation
* 1 : 2 switching or 2 : 1 multiplexing of DisplayPort Main Link signals
* 2 high-speed differential channels with 2 : 1 multiplexing/switching for DisplayPort Main Link signals
* 1 channel with 2 : 1 multiplexing/switching for AUX signals
* 1 channel with 2 : 1 multiplexing/switching for single-ended HPD signals
* High-bandwidth analog pass-gate technology
* Very low intra-pair differential skew 5 ps typical
* Very low inter-pair skew < 180 ps
* Switch/multiplexer position select CMOS input
* Single 3.3 V power supply
* Very low operation current of 0.2 mA typical
* ESD 8 kV HBM, 1 kV CDM
* ESD 2 kV HBM, 500 V CDM for control pins
* Available in 3 mm × 6 mm, 0.4 mm pitch HVQFN32 package
## Target Applications
* Motherboard applications requiring embedded DisplayPort switching/multiplexing
* Docking stations
* Notebook computers
* Chip sets requiring flexible allocation of DisplayPort I/O pins to board connectors
## Features
