FE1.1s USB 2.0 High Speed 4-Port Hub Controller – USB 2.0 hub controller, SSOP28

Description

FE1.1s is a highly integrated USB 2.0 hub controller, offering support for four downstream ports with High-Speed (480 Mb/s), Full-Speed (12 Mb/s), and Low-Speed (1.5 Mb/s) transfer rates. The chip features a Single Transaction Translator (STT) architecture with six non-periodic transaction buffers, minimizing transmission blocking risks and improving data transfer efficiency.

With full compliance to the USB 2.0 specification and integrated transceivers, voltage regulators, and a 12 MHz oscillator, the controller ensures stable operation with low power consumption. The built-in Power-On-Reset circuit and EEPROM support allow configuration of device identifiers and the number of ports.

FE1.1s supports external LEDs to indicate power status and port activity, as well as global over-current detection and ganged power control.

Properties

• USB 2.0 specification compliant
• Transfer mode support: High-Speed (480 Mb/s), Full-Speed (12 Mb/s), Low-Speed (1.5 Mb/s)
• 1 upstream port, 4 downstream ports
• Single Transaction Translator (STT) architecture with support for 64 Start-Split, 32 Complete-Split, and 6 non-periodic transactions
• Integrated USB 2.0 transceivers
• Integrated pull-up/pull-down resistors
• Integrated voltage regulators 5 V → 3.3 V and 1.8 V
• Built-in 12 MHz oscillator and PLL 12 MHz → 480 MHz
• Power-On-Reset circuit
• EEPROM support for VID, PID, version number, and port count configuration
• Support for LEDs indicating port activity and hub status
• Support for ganged power control and global over-current detection
• Low power consumption thanks to advanced clock management