USB2504/
USB2504A
Integrated USB 2.0
Compatible 4-Port Hub
PRODUCT FEATURES
Integrated USB 2.0 Compatible 4-Port Hub
鈥?4 Transaction Translators for highest performance
鈥?High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and
Low-Speed (1.5Mbits/s) compatible
鈥?Full power management with per port or ganged
,
selectable power control
鈥?Detects Bus-Power/Self-Power source and changes
mode automatically
Datasheet
On-Board 24MHz Crystal Driver Circuit or 24 MHz
external clock driver
Internal PLL for 480MHz USB 2.0 Sampling
Internal 1.8V Linear Voltage Regulator
resistors
Internal Short Circuit protection of USB differential
signal pins
1.8 Volt Low Power Core Operation
3.3 Volt I/O with 5V Input Tolerance
64-Pin TQFP lead-free RoHS compliant package
Complete USB Specification 2.0 Compatibility
鈥?Includes USB 2.0 Transceivers
VID/PID/DID, and Port Configuration for Hub via:
鈥?Single Serial I
2
C EEPROM
鈥?SMBus Slave Port
Default VID/PID/DID, allows functionality when
configuration EEPROM is absent
Hardware Strapping options allow for configuration
without an external EEPROM or SMBus Host
SMSC USB2504/USB2504A
DATASHEET
Revision 2.3 (08-27-07)