SMSC USB20H04 Page 1 Revision 1.63 (10-14-04)

DATASHEET
USB20H04

4-Port USB2.0 Hub
Controller


Datasheet
Product Features
General Features
ƒ Compliant with USB2.0 Specification
ƒ Hub controller IC with four downstream ports
ƒ Four transaction translators ensure maximum USB
throughput
ƒ Enables bus-powered Hi-Speed hub design
ƒ Compatible with On-The-Go (OTG) USB devices
ƒ Integrated Session Request Protocol (SRP)
operates with dual-role OTG hosts
ƒ Default configuration with pin selectable options
ƒ Serial interface for configuration from EEPROM or
microcontroller when default is not used
ƒ Flexible OEM configuration options
ƒ Available in a 64-pin TQFP package

Hardware Features
ƒ Detects removal of self-power and automatically
changes mode to bus-power
ƒ Integrated termination and pull-up/pull-down
resistors
ƒ Internal short circuit protection of DP and DM lines
ƒ On-chip oscillator uses low cost 24MHz crystal
ƒ Supports individual or ganged over-current
protection and power control
ƒ LED drivers for each downstream port


OEM Selectable Features
ƒ Configure as a bus-powered or self-powered
Hi-Speed USB hub
ƒ Configure port power switching and current
sensing on an individual or ganged basis
ƒ Enable LED indicator support
ƒ Enable multiple transaction translators
ƒ Enable compound device support on a port by port
basis
ƒ Enable downstream facing ports on a port by port
basis

Pin Selectable Options for Default Configuration
ƒ Select operation as either a Bus-Powered hub or a
Self-Powered hub




ORDERING INFORMATION
Order Number(s):
USB20H04-JD for 64 pin, 10x10x1.4 TQFP package
USB20H04-JT for 64 pin, 10x10x1.4 TQFP package (green, lead-free)