TS3USB3000_15 Datasheet, PDF (13/26 Pages) Texas Instruments – DPDT USB 2.0 High-Speed and Mobile High-Definition Link Switch

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9 Application and Implementation
TS3USB3000
SCDS337B – DECEMBER 2012 – REVISED DECEMBER 2015
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-MΩ 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.
To
Battery
Charger
VBUS
D+
D-
ID
GND
V_BAT
VCC
TS3USB3000
USB+
USB-
D+
D-
USB_D+
USB_D-
Baseband or
Application
Processor
MHL+
MHL-
SEL /OE
MHL+
MHL- ^{HDMI to}
MHL Bridge
CBUS _GND
HDMI
MicroUSB
Connector
GPO1 GPO2
COM
ID_USB
TS5A3157
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-MΩ 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.
Copyright © 2012–2015, Texas Instruments Incorporated
Product Folder Links: TS3USB3000
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