USB 2.0 4-Port Hub Data Sheet Rev. 1.0 FE1.1S USB 2.0 HIGH SPEED 4-PORT HUB CONTROLLER Data Sheet INTRODUCTION The FE1.1s is a highly integrated, high quality, FEATURES high performance, low power consumption, yet Fully compliant with Universal Serial Bus low cost solution for USB 2.0 High Speed 4-Port Specification Revision 2.0 (USB 2.0) Hub. Upstream facing port supports High- Speed (480MHz) and Full-Speed It adopts Single Transaction Translator (STT) (12MHz) modes architecture to be more cost effective. Six, 4 downstream facing ports support instead of two, non-periodic transaction buffers High-Speed (480MHz), Full-Speed are used to minimize potential traffic jamming. (12MHz), and Low-Speed (1.5MHz) The whole design is based on state-machine- modes control to reduce the response delay time no Integrated USB 2.0 Transceivers micro controller is used in this chip. Integrated upstream 1.5K pull-up, downstream 15K pull-down, and serial To guarantee high quality, the whole chip is resisters covered by Test Scan Chain even on the high Integrated 5V to 3.3V and 1.8V regulator. speed (480MHz) modules, so that all the logic Integrated Power-On-Reset circuit components could be fully tested before shipping. Integrated 12MHz Oscillator with feedback Special Build-In-Self-Test mode is designed to resister, and crystal load capacitance exercise all high, full, and low speed Analog Integrated 12MHz-to-480MHz Phase Lock Front End (AFE) components on the packaging Loop (PLL) and testing stages as well. Single Transaction Translator (STT) One TT for all downstream ports Low power consumption is achieved by using The TT could handle 64 periodic Start- 8 0.1 m technology and comprehensive Split transactions, 32 periodic power/clock control mechanism. Most part of the Complete-Split transactions, and 6 chip will not be clocked unless needed. none-periodic transactions Automatic self-power status monitoring Automatic re-enumeration when Self- NOV. 29, 2008 Subject to Change Without Notice 1USB 2.0 4-Port Hub Data Sheet Rev. 1.0 Powered switching to Bus-Powered Ganged Power Control and Global Over- Current Detection support EEPROM configured options Vendor ID, Product ID, & Device Release Number and Number of Downstream Ports Comprehensive Port Indicators support: Downstream Port Enabled indicator LED (x4, Green) Hub Active/Suspend indicator LED. NOV. 29, 2008 Subject to Change Without Notice 2