HD3SS214_16 Datasheet, PDF (11/25 Pages) Texas Instruments – 8.1 Gbps DisplayPort 1.3 2:1/1:2 Differential Switch

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8 Application and Implementation
HD3SS214
SLAS907A – DECEMBER 2015 – REVISED JULY 2016
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 4. Dual GPU with Docking Station Support
8.2.2 Design Requirements
For this design example, use the parameters shown in Table 2.
Table 2. Design Parameters
PARAMETER
V_DD
Source
Sink
AUX_SEL Level
DP++ Support
VALUE
3.3 V
DP x1
DP x2
M
No
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