AT43301

USB PRODUCTS AT43301 LOW COST USB HUB CONTROLLER Bus or Self Powered USB Hub Operation Global Over-Current Sensing Ganged Port Power Switching Bus Powered Controller in the Self Powered Mode 6 MHz Oscillator with PLL On Chip 3.3V Voltage Regulator 24-Pin SOIC One Upstream Port Plus Four Downstream Ports Integrated Hub Protocol Controller LFT OSC1 OSC2 OSC & PLL DP4 DM4 PORT4 DP3 DM3 DP0 DM0 SELF/BUS TEST SERIAL INTERFACE ENGINE PORT3 DP2 DM2 LPSTAT CEXT1 CEXT2 VCC VSS VSS HUB REPEATER PORT2 DP1 DM1 HUB CONTROLLER PORT1 PWR OVC STAT The Atmel AT43301 USB Hub Controller is designed for use in very, low cost self powered or bus powered USB hubs. Application for such hubs are as a standalone hub for use with portable/notebook PCs, as well as an embedded hub in peripherals such as keyboards. The AT43301 supports one upstream port and four downstream ports. It handles all the hub protocols, thus offloading the user from the details of the USB operations. The chip is USB Spec Rev 1.1 compliant and is available in a 24-pin SOIC Package. USB Hub Product Group Atmel Rousset Zone Industrielle 13106 Rousset Cedex France Tel: (+33)(0)4 42 53 60 00 Fax: (+33)(0)4 42 53 60 01 Headquarters AT43301 in a Self Powered Hub BUS_POWER GND Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 USA Tel: (+1)(408) 441 0311 Fax: (+1)(408) 436 4300 U1 GND VCC AT43301 Europe Atmel U.K. Ltd Coliseum Business Centre Riverside Way, Camberley Surrey GU1...