1 Features
1• Four port USB 3.2 x1 Gen1 (5 Gbps) hub
• USB 2.0 hub features
– Multi transaction translator (MTT) hub: four
transaction translators
– Two asynchronous endpoint buffers per
transaction translator
• Supports battery charging:
– Supports D+/D- divider charging port (ACP1,
ACP2, and ACP3) when the upstream port is
unconnected or not configured
– Supports automatic mode for transition
between DCP or ACP modes when the
upstream port is unconnected
– Supports galaxy charging
– CDP mode (upstream port connected)
– DCP mode (upstream port unconnected)
– DCP mode complies with chinese
telecommunications industry standard YD/T
1591-2009
• Supports Operation as a USB 3.2 x1 Gen1 or
USB 2.0 Compound Device
• Per port or ganged power switching and overcurrent
notification inputs
• Supports four external downstream ports plus
internal USB 2.0-only port for USB HID to I2C
functionality
• Internal downstream port for I2C control through
USB HID supports high-speed, full-speed
operation. Its speed matches that of the upstream
port.
• Supports vendor requests to read and write I2C
and EEPROM read at 100 k and 400 k (Default)
• I2C master supports clock stretching
• OTP ROM, Serial EEPROM or I2C/SMBus slave
interface for custom configurations:
– VID and PID
– Port customizations
– Manufacturer and product strings (not by OTP
ROM)
– Serial number (not by OTP ROM)
• Application Feature selection using pin selection
or EEPROM or I2C/SMBus slave interface
• Provides 128-Bit Universally Unique Identifier
(UUID)
• Supports on-board and in-system EEPROM
programming Via the USB 2.0 upstream port
• Single clock input, 24-MHz crystal or oscillator
• Downstream ports configurable to USB2.0 only
• 64-Pin QFN package (RGC)

2 Applications
Computer systems, docking stations, monitors,
set-top boxes

3 Description
The TUSB8043A is a four-port USB 3.2 x1 Gen1 (5
Gbps) hub. It provides simultaneous SuperSpeed
USB and high-speed/full-speed connections on the
upstream port and provides SuperSpeed USB, highspeed,
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.