A

B

C

D

FR4 Trace

of Length Y

FR4 Trace

of Length X

C

USB 3.1

Host

RXP1

TUSB1002

RXN1

+

-

TXP2

TXN2

+

-

+

-

TXP1

TXN1

+

-

+

-

RXP2

RXN2

+

-

Upstream

C

C

C

C

C

Downstream

Copyright © 2016, Texas Instruments Incorporated

18

TUSB1002

SLLSEU4A – MAY 2016 – REVISED MAY 2016

www.ti.com

Product Folder Links: TUSB1002

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Copyright © 2016, 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 TUSB1002 is a linear redriver designed specifically to compensation for ISI jitter caused by attenuation

through a passive medium like traces and cables. Because the TUSB1002 has two independent channels, it can

be optimized to correct ISI in both the upstream and downstream direction through 14 different equalization

choices. Placing the TUSB1002 between a USB3.1 Host/device controller and a USB3.1 receptacle can correct

signal integrity issues resulting in a more robust system.

8.2 Typical Application

Figure 17. TUSB1002 in USB3.1 Host Application

8.2.1 Design Requirements

Fro this design example , use the parameters shown in Figure 20.

Table 4. Design Parameters

PARAMETER

VALUE

VCC supply (3 V to 3.6 V)

3.3 V

Mode of Operation (Dual or Half Channel)

MODE = F (Floating) for USB3.1 Dual Channel

A/C coupling Capacitor (75 nF to 265 nF)

100 nF

A to B FR4 Length (inches)

8

A to B FR4 Trace Width (mils)

4

C to D FR4 length (inches)

2

C to D FR4 Trace Width (mils)

4

USB3.1 Host Sleep GPIO Support

No (SLP_S0# pin floating)

DC Gain (-2, -1, 0, +1, +2)

0 dB (CFG[2:1] pins floating)

Linear Range (900 mV, 1000 mV, or 1200 mV)

1200 mV (CFG[2:1] pins floating)