Description
The FE1.1s is a highly integrated, high quality, and high performance solution for USB 2.0 4-port hub. With its tiny footprint and extremely low power consumption, it is the best choice for embedded application as well as standalone hub.
The high quality of FE1.1s is guaranteed by Design- For-Testing with comprehensive scan chains and Built-In-Self-Test modes which could exercise all High, Full, and Low Speed analog front end (AFE) components on the packaging and testing stages.
FE1.1s could be optionally configured to support Charging Downstream Ports as defined by USB-IF Battery Charging Specification. With this feature enabled, an USB hub could be easily transformed into a charging station – USB Charging Hub for Universal Charging Solution compliant battery based portable devices.
Features
- 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, Full-Speed, and Low-Speed(12MHz) modes;
- Compliant with Universal Charging Solution, and USB Battery Charging Specification 1.1/1.2.
- 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 regulators;
- Integrated Power-On-Reset with power failure detection circuit;
- Integrated 12MHz Oscillator with feedback resister and crystal load capacitors;
- Integrated 12MHz-to-480MHz Phase Lock Loop (PLL);
- Integrated Portable Device detection circuitry for UCS supporting;
- Single Transaction Translator (Single TT) –
- 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;
- Ganged Power Control and Global Over-Current Detection support;
- EEPROM configured options –
- Vendor ID, Product ID, & Device Release
Number; and
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Number of Downstream Ports;
- Vendor ID, Product ID, & Device Release
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Automatic re-enumeration when hub switches from self-powered mode to bus-powered mode;
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Board configured comprehensive Port Indicators support:
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Four Downstream Port Enabled indicator LED (Green, one for each port), plus one Active/Suspend indicator LED (Red); or
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One joint Downstream Port Enabled indicator LED (Green, one for all ports), plus one Active/Suspend indicator LED (Red); or
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One joint Downstream Port Enabled indicator LED (Green, one for all ports), plus one Charging Request/Portable Device Detection indicator LED (Blue);
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Board configure support of portable device detection mechanism for Universal Charging Solution on all 4 downstream ports.
Package
- 28-Pin SSOP (Body Size: 10mm x 4mm)
- 24-Pin WQFN (Body Size: 4mm x 4mm)
