SMSC USB20H04 User Manual

SMSC USB20H04 

Page 1 

Revision 1.63 (03-30-07) 

 

 

 

General Features 
ƒ  Compliant with USB 2.0 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  

 

 

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 

 

ƒ  Select operation as either a Bus-Powered hub or a 

Self-Powered hub 

 
 
 
 

USB20H04-JD for 64 pin, 10x10x1.4 TQFP package 

USB20H04-JT for 64 pin, 10x10x1.4 TQFP Lead-Free RoHS Compliant Package