آی سی FE1.1S یک کنترلر
هاب USB 2.0 است که توسط شرکت Microchip Technology طراحی و تولید شده است. این آی سی برای توزیع و مدیریت پورتهای USB استفاده میشود و به سیستم اجازه میدهد تا چندین دستگاه USB را به یک کنترلر میزبان (host controller) متصل کند.
این آی سی قابلیت پشتیبانی از چهار پورت USB2.0 را دارد و با استاندارد USB2.0 سازگار است و می تواند با نرخ داده 1.5 مگابیت بر ثانیه، 12 مگابیت بر ثانیه و 480 مگابیت بر ثانیه تبادل داده انجام دهد.
این آی سی نیازی به درایور اضافی ندارد و سیستم های عامل را به طور خودکار شناسایی و کنترل می کند.
Description:
The FE1.1s is a highly integrated, high quality, high performance, low power consumption, yet low cost solution for USB 2.0 High Speed 4-Port Hub.
It adopts Single Transaction Translator (STT) architecture to be more cost effective. Six, instead of two, non-periodic transaction buffers are used to minimize potential traffic jamming.
The whole design is based on state-machine control to reduce the response delay time; no micro controller is used in this chip.
Application:
HUB controller
USB2.0 Port distribution
Specifications:
Fully compliant with Universal Serial Bus
Specification Revision 2.0 (USB 2.0);
□ Upstream facing port supports High Speed (480MHz) and Full-Speed (12MHz) modes;
□ 4 downstream facing ports support High-Speed (480MHz), Full-Speed (12MHz), and Low-Speed (1.5MHz) modes;
Integrated USB 2.0 Transceivers;
Integrated upstream 1.5KΩ pull-up, downstream 15KΩ pull-down, and serial resisters;
Integrated 5V to 3.3V and 1.8V regulator.
Integrated Power-On-Reset circuit;
Integrated 12MHz Oscillator with feedback resister, and crystal load capacitance;
Integrated 12MHz-to-480MHz Phase Lock Loop (PLL);
Single Transaction Translator (STT) –
□ One TT for all downstream ports;
□ The TT could handle 64 periodic Start Split transactions, 32 periodic Complete-Split transactions, and 6 none-periodic transactions;
Automatic self-power status monitoring;
□ Automatic re-enumeration when Self-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.