HomedatasheetTUSB2077APT

TUSB2077APT Datasheet

7-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE
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Description

Description
The TUSB2077A hub is a 3.3-V CMOS device that provides up to seven downstream ports in compliance with the USB 2.0 specification. Because this device is implemented with a digital state machine instead of a microcontroller, no software programming is required. Fully compliant USB transceivers are integrated into the ASIC for all upstream and downstream ports. The downstream ports support full-speed and low-speed devices by automatically setting the slew rate according to the speed of the device attached to the ports. The configuration of the BUSPWR terminal selects either the bus-powered or self-powered mode.

Features
• Fully Compliant With the USB Specification as a Full-Speed Hub: TID #20240226
• Integrated USB Transceivers
• 3.3-V Low-Power ASIC Logic
• Two Power Source Modes
   – Self-Powered Mode Supporting Seven Downstream Ports
   – Bus-Powered Mode Supporting Four Downstream Ports
• All Downstream Ports Support Full-Speed and Low-Speed Operations
• Power Switching and Overcurrent Reporting Is Provided Ganged or Per Port
• Supports Suspend and Resume Operations
• Suspend Status Pin Available for External Logic Power Down
• Supports Custom Vendor ID and Product ID With External Serial EEPROM
• 3-State EEPROM Interface Allows EEPROM Sharing
• Push-Pull Outputs for PWRON Eliminate the Need for External Pullup Resistors
• Noise Filtering on OVRCUR Provides Immunity to Voltage Spikes
• Supports 6-MHz Operation Through a Crystal Input or a 48-MHz Input Clock
• New Functional Pins Introduced to Reduce the Board Material Cost
   – 3 LED Indicator Control Outputs Enable
      Visualized Monitoring of 6 Different Hub/Port
      Status (HUBCFG, PORTPWR, PORTDIS)
   – Output Pin Available to Disable External Pullup
      Resistor on DP0 for 15 ms After Reset or After
      Change on BUSPWR and Enable Easy
      Implementation of Onboard Bus/Self-Power
      Dynamic Switching Circuitry
• No Special Driver Requirements; Works Seamlessly With Any Operating System
   With USB Stack Support
• Available in 48-Pin LQFP Package
• JEDEC Descriptor S−PQFP−G for Low-Profile Quad Flatpack (LQFP).

Applications
• Computer Systems
• Docking Stations

Features

Parameters


Manufacturer information

TEXAS INSTRUMENTS

Texas Instruments introduction - Texas Instruments Incorporated (TI) is a global semiconductor design and manufacturing company that develops analog ICs and embedded processors. By employing the world's brightest minds, TI creates innovations that shape the future of technology. TI is helping more than 100,000 customers transform the future, today.

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