FE8.1 — USB 2.0 4-Port STT Hub Controller
FE8.1 is an extremely compact High Speed 4-Port USB Hub Controller that always reports itself as a Self-Powered hub, regardless of the actual system implementation. It is the best choice for embedded systems and standalone hub.
Minimal Pin Count
FE8.1 is a highly integrated, high-quality, and high-performance USB 2.0 solution with only 16 pins and a 4x5 mm body size.
Quality 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 at the packaging and testing stages.
Low Power Consumption
FE8.1 features tiny footprint and extreme low power consumption.
FE8.1 in SSOP-16 packageProduct Specifications
| Package | Port Count | Body Size | Grade | Transaction Translator |
|---|---|---|---|---|
| SSOP-16 | 4 | 4x5 mm | Commercial Grade | Single |
Commercial Grade: 0°C - 70°C
Features
- Universal Serial Bus Specification Revision 2.0 (USB 2.0) fully compliant AFE transceivers
- 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 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 circuit with power failure detection circuit
- Integrated 12MHz Oscillator with feedback resister, and crystal load capacitor
- Integrated 12MHz-to-480MHz Phase Lock Loop (PLL)
- Single Transaction Translators (STT)
- One TT for all downstream ports
- The TT can handle 64 periodic Start-Split transactions, 32 periodic Complete-Split transactions, and 6 none-periodic transactions