D+

D-

MicroUSB

Connector

D+

D-

COM

USB_D+

USB+

USB-

MHL+

MHL-

CBUS

HDMI

Baseband or

Application

Processor

TS3USB3000

HDMI to

MHL Bridge

To

Battery

Charger

VBUS

ID

GND

VCC

USB_D-

MHL+

MHL-

SEL

GND

ID_USB

TS5A3157

/OE

GPO2

GPO1

TS3USB3000

www.ti.com

SCDS337B – DECEMBER 2012 – REVISED DECEMBER 2015

9 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.

9.1 Application Information

There are many USB applications in which the USB hubs or controllers have a limited number of USB I/Os or

need to route signals from a single USB connector. The TS3USB3000 solution can effectively expand the limited

USB I/Os by switching between multiple USB buses to interface them to a single USB hub or controller or route

signals from on connector to two different locations.

9.2 Typical Application

Figure 15 represents a typical application of the TS3USB3000 USB/MHL switch. The TS3USB3000 is used to

switch signals between the USB path, which goes to the baseband or application processor, or the MHL path,

which goes to the HDMI to MHL bridge. The TS3USB3000 has internal 6-M

Ω pulldown resistors on SEL and OE.

The pulldown on SEL ensure the USB channel is selected by default. The pulldown on OE enables the switch

when power is applied. The TS5A3157 is a separate SPDT switch that is used to switch between MHL’s CBUS

and the USB ID line that is needed for USB OTG (USB On-The-Go) application.

Figure 15. Typical TS3USB3000 Application

9.2.1 Design Requirements

Design requirements of the MHL and USB 1.0,1.1, and 2.0 standards must be followed. The TS3USB3000 has

internal 6-M

Ω pulldown resistors on SEL and OE, so no external resistors are required on the logic pins. The

internal pulldown resistor on SEL ensures the USB channel is selected by default. The internal pulldown resistor

on OE enables the switch when power is applied to VCC.

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Product Folder Links: TS3USB3000