8 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification, and TI

does not warrant its accuracy or completeness. TI’s customers are responsible for determining

suitability of components for their purposes. Customers should validate and test their design

implementation to confirm system functionality.

8.1 Application Information

The HD3SS214 is a 1:2/2:1 DP switch that supports 8.1 Gbps data rates and DP++. This switch is bi-directional,

so it can be used to switch two inputs to one output or one input to one of two outputs. In addition to main link

switching, this switch also supports AUX and DDC switching, which simplifies DP++ implementation. 3.3 V is

used to supply power to the switch.

8.2 Typical Application

8.2.1 Dual GPU With Docking Station Support

Many consumer devices require multiple video sources to be routed to multiple output sinks. One example of

these devices is a dual-GPU laptop with docking station support. The laptop has two video sources that can be

chosen: one low-power integrated GPU and one high-power discrete GPU. The video stream from one of these

sources needs to be routed to one of two outputs: the docking station port or the laptop DisplayPort video port.

In order to support this functionality, a high data rate, multi-input/multi-output switch system is required.

Figure 8-1. Dual GPU with Docking Station Support

8.2.2 Design Requirements

For this design example, use the parameters shown in Table 8-1.

Table 8-1. Design Parameters

PARAMETER

VALUE

3.3 V

Source

DP x1

Sink

DP x2

AUX_SEL Level

M

DP++ Support

No

HD3SS214

SLAS907C – DECEMBER 2015 – REVISED DECEMBER 2020

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