TUSB4020BI-Q1 Datasheet, PDF (1/45 Pages) Texas Instruments – Two-Port USB 2.0 Hub

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TUSB4020BI-Q1 Two-Port USB 2.0 Hub
TUSB4020BI-Q1
SLLSEI1 – JULY 2015
1 Features
•1 Two-Port USB 2.0 Hub
• USB 2.0 Hub Features
– Multi-Transaction Translator (MTT) Hub: Two
Transaction Translators
– Four Asynchronous Endpoint Buffers per
Transaction Translator
• DM/DP Polarity Swap
• Type C Compatible
• Supports Battery Charging
– CDP Mode (Upstream Port Connected)
– DCP Mode (Upstream Port Unconnected)
– DCP Mode Complies With Chinese
Telecommunications Industry Standard YD/T
1591-2009
– D+/D– Divider Mode
• Per Port or Ganged Power Switching and
Overcurrent Notification Inputs
• 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 Terminal
Selection or EEPROM/ or I²C/SMBus Slave
Interface
• Provides 128-Bit Universally Unique Identifier
(UUID)
• Supports On-Board and In-System OTP/EEPROM
Programming Through the USB 2.0 Upstream
Port
• Single Clock Input, 24-MHz Crystal or Oscillator
• No Special Driver Requirements; Works
Seamlessly on any Operating System With USB
Stack Support
• 48-Pin HTQFP Package (PHP)
2 Applications
• Automotive
• Computer Systems
• Docking Stations
• Monitors
• Set-Top Boxes
3 Description
The TUSB4020BI-Q1 is a two-port USB 2.0 hub. It
provides USB high-speed/full-speed connections on
the upstream port and provides high-speed, full-
speed, or low-speed connections on the two
downstream ports. When the upstream port is
connected to an electrical environment that supports
high-speed and full-speed/low-speed connections,
high-speed and full-speed/low-speed USB
connectivity is enabled on the downstream ports.
When the upstream port is connected to an electrical
environment that only supports full-speed/low-speed
connections, high-speed connectivity are disabled on
the downstream ports.
The TUSB4020BI-Q1 supports per port or ganged
power switching and overcurrent protection.
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 overcurrent event, power to all
downstream ports will be switched off.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TUSB4020BI-Q1
HTQFP (48)
7.00 mm × 7.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram
Embedded
Host
TUSB4020BI-Q1
Front Console
Convenience Port
Front Console
SD Reader
USB 2.0 Connection
USB 2.0 Hub
USB 2.0 Port
USB 2.0 Device
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.