TUSB8041RGCT datasheet(12/48 Pages) TI1

12 / 48 page

VBUS

Detect

SuperSpeed Hub

USB 2.0 Hub

Oscilator

Clock

and

Reset

Distribution

Control

Registers

GPIO

I2C

SMBUS

Power

Distribution

VDD33

VSS

GRSTz

SCL/SMBCLK

SDA/SMBDAT

SMBUSz/SS_SUSPEND

PWRCTL1/BATEN1

OVERCUR1z

PWRCTL2/BATEN2

OVERCUR2z

PWRCTL_POL

GANGED/SMBA2/HS_UP

FULLPWRMGMTz/SMBA1/SS_UP

VDD

TEST

OTP

ROM

PWRCTL3/BATEN3

OVERCUR3z

PWRCTL4/BATEN4

OVERCUR4z

AUTOENz/HS_SUSPEND

TUSB8041

SLLSEE4D – JUNE 2014 – REVISED JANUARY 2016

www.ti.com

8 Detailed Description

8.1 Overview

The TUSB8041 is a four-port USB 3.0 compliant hub. It provides simultaneous SuperSpeed USB and high-

speed/full-speed connections on the upstream port and provides SuperSpeed USB, high-speed, full-speed, or

low-speed connections on the downstream ports. When the upstream port is connected to an electrical

environment that only supports high-speed or full-speed/low-speed connections, SuperSpeed USB connectivity is

disabled on the downstream ports. When the upstream port is connected to an electrical environment that only

supports full-speed/low-speed connections, SuperSpeed USB and high-speed connectivity are disabled on the

downstream ports.

8.2 Functional Block Diagram

8.3 Feature Description

8.3.1 Battery Charging Features

The TUSB8041 provides support for USB Battery Charging. Battery charging support may be enabled on a per

port basis through the REG_6h(batEn[3:0]).

Battery charging support includes both Charging Downstream Port (CDP) and Dedicated Charging Port (DCP)

modes. The DCP mode is compliant with the Chinese Telecommunications Industry Standard YD/T 1591-2009.

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