SMSC USB2504A User Manual

SMSC USB2504/USB2504A

Revision 2.3 (08-27-07) 

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Integrated USB 2.0 Compatible 4-Port Hub

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4 Transaction Translators for highest performance 

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High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and 
Low-Speed (1.5Mbits/s) compatible

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Full power management with per port or ganged

, 

selectable power control

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Detects Bus-Power/Self-Power source and changes 
mode automatically

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Complete USB Specification 2.0 Compatibility

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Includes USB 2.0 Transceivers

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VID/PID/DID, and Port Configuration for Hub via:

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Single Serial I

2

C EEPROM

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SMBus Slave Port

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Default VID/PID/DID, allows functionality when 

configuration EEPROM is absent

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Hardware Strapping options allow for configuration 

without an external EEPROM or SMBus Host

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On-Board 24MHz Crystal Driver Circuit or 24 MHz 

external clock driver

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Internal PLL for 480MHz USB 2.0 Sampling 

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Internal 1.8V Linear Voltage Regulator

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Integrated USB termination and Pull-up/Pull-down 

resistors

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Internal Short Circuit protection of USB differential 

signal pins

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1.8 Volt Low Power Core Operation

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3.3 Volt I/O with 5V Input Tolerance

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64-Pin TQFP lead-free RoHS compliant package