6 Detailed Description

6.1 Overview

The TUSB1002A is the industry’s first, dual lane USB 3.2 x1 SuperSpeedPlus redriver. As signals traverse

through a channel (like FR4 trace) the amplitude of the signal is attenuated. The attenuation varies depending

on the frequency content of the signal. Depending the length of the channel this attenuation can be large enough

resulting in signal integrity issues at a USB 3.2 receiver. By placing a TUSB1002A between USB3.2 host and

device the attenuation effect of the channel can eliminated or minimized. The result is a USB3.2 compatible

eye at the devices receiver. With up to 16 receiver equalization settings, the TUSB1002A can support many

different channel loss combinations. The TUSB1002A offers low power consumption on a single 3.3V supply

and a ultra-low power architecture. The device supports the USB3.2 low power modes which further reduces

idle power consumption. The TUSB1002A settings are configurable through pins. In addition to equalization

adjustment, the TUSB1002A provides knobs for adjusting DC gain and voltage output linearity range.

6.2 Functional Block Diagram

RX1P

RX1N

TX1N

TX1P

GND

RX

TX

VIterm

ATXEN1

AIDLE1

ARXDET1

LOS

Rx

Detect

ALOSZ1

ARXTERM_EN1

RX2P

RX2N

TX2N

TX2P

GND

RX

TX

VIterm

ATXEN2

AIDLE2

ARXDET2

LOS

Rx

Detect

ALOSZ2

ARXTERM_EN2

LFPS

ALFPS2

LFPS

ALFPS1

Digital

FSM

CFG1

CH1_EQ1

CH1_EQ2

DCBOOST#

EN

CFG2

CH2_EQ1

CH2_EQ2

MODE

RSVD1

TUSB1002A

SLLSF63C – MARCH 2018 – REVISED JULY 2024

www.ti.com

14

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