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TUSB2040 Datasheet(PDF) 1 Page - Texas Instruments |
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TUSB2040 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 17 page TUSB2040A 4-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE SLLS288B – FEBRUARY 1998 – REVISED MARCH 1998 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Universal Serial Bus (USB) Version 1.0 Compliant D Integrated USB Transceivers D Four Downstream Ports D Two Power Source Modes – Self-Powered Mode – Bus-Powered Mode D Power Switching and Overcurrent Reporting is Provided Ganged or Per Port D All Downstream Ports Support Full-Speed and Low-Speed Operations D Supports Suspend and Resume Operations D Pin-to-Pin Compatible with the TUSB2040 Device when EXTMEM Pin is Low D Supports Programmable Vendor ID and Product ID With External Serial EEPROM D Tri-State EEPROM Interface Allows EEPROM Sharing D Available in 28-Pin DIP and 48-Pin TQFP Packages D 3.3-V Operation description The TUSB2040A hub is a 3.3-V CMOS device that provides up to four downstream ports in compliance with the USB specification 1.0 version. Pin 21 (EXTMEM) enables or disables the EEPROM interface. When EXTMEM is low, the TUSB2040A is functionally equivalent to the TUSB2040 hub and the product ID (PID) displayed during enumeration is General Purpose USB Hub. For this configuration, pins 9 and 10 are the BUSPWR and GANGED input pins, respectively. If programmable vendor ID(VID) and product ID(PID) descriptors are desired, pin 21 must be high (EXTMEM = 1) and a SGS Thompson M93C46 or equivalent EEPROM must be connected to pins 9 and 10. For this configuration, the values for BUSPWR and GANGED are stored in the EEPROM and pins 9 and 10 become the EEPROM interface. Copyright © 1998, Texas Instruments Incorporated 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. 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. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 OVRCUR2 PWRON1 OVRCUR1 DP0 DM0 GND DP1 DM1 BUSPWR/SCL GANGED/SDA DP2 DM2 VCC DP3 PWRON2 VCC OVRCUR3 PWRON3 GND XTAL1 XTAL2 EXTMEM PWRON4 OVRCUR4 RESET DM4 DP4 DM3 N PACKAGE (TOP VIEW) GND XTAL1 XTAL2 NC EXTMEM NC NC PWRON4 NC OVRCUR4 NC RESET 36 35 34 33 32 31 30 29 28 27 26 25 1 2 3 4 5 6 7 8 9 10 11 12 DP0 DM0 GND NC NC DP1 DM1 NC NC BUSPWR/SCL GANGED/SDA PT PACKAGE (TOP VIEW) NC † JEDEC descriptor S–PQFP–G for thin quad flatpack (TQFP) |
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