GL652USB datasheet(2/17 Pages) ETC

2 / 17 page

08/18/00

GL652USB 7 PORT USB HUB CONTROLLER

Revision 1.2

FEATURES

• High performance and low-cost solution for USB hub

• USB Specification Compliance

− 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

GL652USB 데이터시트(PDF) 2 Page - List of Unclassifed Manufacturers