GL652USB

Genesys Logic, Inc. www.DataSheet4U.com GL652USB USB 7 PORT HUB CONTROLLER DATA SHEET, Version 1.2 Aug. 18, 2000 Genesys Logic, Inc. 10F, No.11, Ln.3, Tsao Ti Wei, Shenkeng, Taipei, Taiwan Tel: 886-2-2664-6655 Fax: 886-2-2664-5757 http://www.genesyslogic.com GL652USB 7 PORT USB HUB CONTROLLER 1 FEATURES High performance and low-cost solution for USB hub USB Specification Compliance www.DataSheet4U.com − Conforms to USB specification Rev. 1.1 − Supports 1 device address and 2 endpoints 8-bit micro-processor − RISC-like architecture − USB optimized instruction set − Single cycle instruction execution − Operation Speed: DC to 24 MHz clock input − Performance: 12 MIPS @ 24MHz I/O ports − 7-port hub Internal memory − 64 bytes of RAM − 1.75K × 14 of program ROM On-chip 3.3v output − No external regulator required Integrated USB transceiver 12 MHz external clock Improved output drivers with slew-rate control to reduce EMI Internal power-on reset(POR) Internal power-fail detector for ESD recovery Support suspend/normal mode power management Support power management for downstream port devices Automatic switching between self/bus powered mode Smart LED traffic indicator − The higher data traffic flows through one port, the higher frequency that port’s LED will blink. Applications: − Stand-alone USB hub − PC motherboard USB hub 48 pin LQFP package 2 08/18/00 Revision 1.2 GL652USB 7 PORT USB HUB CONTROLLER 2 FUNCTION OVERVIEW www.DataS...