SMSC USB2503

USB2503 일반적인 설명

General DescriptionThe SMSC 3-Port Hub is fully compliant with the USB 2.0 Specification and will attach to a USB host as a Full-Speed Hub or as a Full-/High-Speed Hub. The 3-Port Hub supports Low-Speed, Full-Speed, and High-Speed (if operating as a High-Speed Hub) downstream devices on all of the enabled downstream ports.PRODUCT FEATURES■ Integrated USB 2.0 Compatible 3-Port Hub    — 3 Transaction Translators for highest performance    — High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and Low-Speed (1.5Mbits/s) compatible    — Full power management with per port or ganged, selectable power control    — Detects Bus-Power/Self-Power source and changes mode automatically■ Complete USB Specification 2.0 Compatibility    — Includes USB 2.0 Transceivers■ VID/PID/DID, and Port Configuration for Hub via:    — Single Serial I2C EEPROM    — 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■ 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■ Integrated USB termination and Pull-up/Pull-down 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■ 48 Pin QFN lead-free RoHS compliant package

특징

• Integrated USB 2.0 Compatible 3-Port Hub
• — 3 Transaction Translators for highest performance
• — High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and Low-Speed (1.5Mbits/s) compatible
• — Full power management with per port or ganged, selectable power control
• — Detects Bus-Power/Self-Power source and changes mode automatically
• Complete USB Specification 2.0 Compatibility
• — Includes USB 2.0 Transceivers
• VID/PID/DID, and Port Configuration for Hub via:
• — Single Serial I2C EEPROM
• — 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
• 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
• Integrated USB termination and Pull-up/Pull-down 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
• 48 Pin QFN lead-free RoHS compliant package