100 nF

R

BOOS T

Supply

+3.3V or +5 V

1uF

(optional)

100 nF

Vcc

R

RXSEN1

R

RXSEN2

USB

Host or Hub

CON_D2P

CON_D2N

USB_D1P

USB_D1N

Copyright © 2019, Texas Instr uments Incorporat ed

RSTZ

BOOS T

D2P

D2M

RX_SEN/ENA_HS

GND

VCC

D1M

D1P

Ferrite Bead

100Q@100MHz

Con nect

D1P and D2P

Con nect

D1M an d D2M

14

TUSB216

SLLSEZ6A – FEBRUARY 2019 – REVISED DECEMBER 2019

www.ti.com

Product Folder Links: TUSB216

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Copyright © 2019, Texas Instruments Incorporated

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 purpose of the TUSB216 is to re-store the signal integrity of a USB High-speed channel up to the USB

connector. The loss in signal quality stems from reduced channel bandwidth due to high loss PCB trace and

other components that contribute a capacitive load. This can cause the channel to fail the USB near end eye

mask. Proper use of the TUSB216 can help to pass this eye mask.

A secondary purpose is to use the CD pin of the TUSB216 to control other blocks on the customer platform, if so

desired.

8.2 Typical Application

A typical application for TUSB216 is shown in Figure 7. In this setup, D2P and D2M face the USB connector

while D1P and D1M face the USB host. The orientation may be reversed [that is, D2 faces transceiver and D1

faces connector].

Figure 7. TUSB216 Reference Schematic (Design Example with CDP disabled)