TUSB2077A Datasheet, PDF (1/16 Pages) Texas Instruments – 7-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE

TUSB2077A
7-PORT HUB FOR THE UNIVERSAL SERIAL BUS
WITH OPTIONAL SERIAL EEPROM INTERFACE
SLLS414 – MARCH 2000
D Universal Serial Bus (USB) Version 1.1
Compliant
D Integrated USB Transceivers
D 3.3-V Low Power ASIC Logic
D Two Power Source Modes
– Self-powered Mode Supporting Seven
Downstream Ports
– Bus-powered Mode Supporting Four
Downstream Ports
D All Downstream Ports Support Full-Speed
and Low-Speed Operations
D Power Switching and Overcurrent
Reporting is Provided Per Port or Ganged
D Supports Suspend and Resume Operations
D Suspend Status Terminal Avaliable for
External Logic Power Down
D Supports Custom Vendor ID and Product ID
With External Serial EEPROM
D 3-State EEPROM Interface to Allow
EEPROM Sharing
D Push-Pull Outputs for PWRON Eliminate
the Need for External Pullup Resistors
D Noise Filtering on OVRCUR Provides
Immunity to Voltage Spikes
D Supports 6-MHz Operation Through Crystal
Input or 48-MHz Input Clock
D 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 On-Board Bus/Self
Power Dynamic Switching Circuitry
D Available in 48-Pin LQFP^† Package
PT PACKAGE
(TOP VIEW)
SUSPND ¹
DP0PUR ²
DP0 ³
DM0 4
GND 5
RESET 6
EECLK 7
EEDATA/GANGED 8
VCC 9
BUSPWR 10
PWRON1 11
OVRCUR1 12
36 PWRON7
35 DP6
34 DM6
33 OVRCUR6
32 PWRON6
31 DP5
30 DM5
29 OVRCUR5
28 PWRON5
27 DP4
26 DM4
25 ^OVRCUR4
NC – No internal connection
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
JEDEC descriptor S–PQFP–G for low-profile quad flatpack (LQFP)
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1997, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1