USB PRODUCTS
AT43301 LOW COST
USB HUB CONTROLLER
• Bus or Self Powered USB Hub
Operation
• Global Over-Current Sensi...
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...