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TUSB8043 Datasheet(PDF) 3 Page - Texas Instruments

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Part # TUSB8043
Description  Four-Port USB 3.1 Gen1 Hub
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

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TUSB8043
www.ti.com
SLLSEW4 – JUNE 2017
Product Folder Links: TUSB8043
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Copyright © 2017, Texas Instruments Incorporated
5 Description (Continued)
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.
The TUSB8043 supports per port or ganged power switching and over-current protection, and supports battery
charging applications.
An individually port power controlled hub switches power on or off to each downstream port as requested by the
USB host. Also when an individually port power controlled hub senses an over-current event, only power to the
affected downstream port will be switched off.
A ganged hub switches on power to all its downstream ports when power is required to be on for any port. The
power to the downstream ports is not switched off unless all ports are in a state that allows power to be removed.
Also when a ganged hub senses an over-current event, power to all downstream ports will be switched off.
The TUSB8043 downstream ports provide support for battery charging applications by providing Battery
Charging Downstream Port (CDP) handshaking support. It also supports a Dedicated Charging Port (DCP) mode
when the upstream port is not connected. The DCP mode supports USB devices which support with the USB
Battery Charging, Galaxy Charging, and Chinese Telecommunications Industry Standard YD/T 1591-2009. In
addition when upstream port is unconnected, the TUSB8043 supports the divider charging port modes (ACPx
modes) and an automatic transition through all modes, starting with ACP3 and ending in DCP.
The TUSB8043 provides pin strap configuration for some features including battery charging support, and also
provides customization though OTP ROM, I2C EEPROM, or via an I2C/SMBus slave interface for PID, VID, and
custom port and phy configurations. Custom string support is also available when using an I2C EEPROM or the
I2C/SMBus slave interface.
The TUSB8043 supports programming of an attached EEPROM through its internal USB HID to I2C interface.
The device is available in a 64-pin RGC package and is offered in a commercial version for operation over the
temperature range of 0°C to 70°C.


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