XR22414数据手册集成电路（IC）的控制器规格书PDF

描述 Description

 
The XR22414 is a USB 2.0 4-port hub using multiple transaction translators (MTT) for highest possible bandwidth capability.  The upstream USB interface has an integrated USB 2.0 PHY and device controller that is compliant with both Hi-Speed (480Mbps) and Full-Speed (12Mbps) and downstream PHY supporting Hi-Speed, Full-Speed and Low-Speed (1.5Mbps) on each of the 4 downstream ports. The XR22414 provides two power modes, ganged or individual power control as well as global or individual over-current sensing modes. The XR22414 operates from a single 5V or 3.3V power input. When powered by 5V, internal regulators provide a 3.3V output which may be connected to VCC33 power input pins as well as external circuitry. In turn a second internal regulator provides a 1.8V output from the 3.3V input. This 1.8V output may be connected to VCC18 power input pins. Individual port activity and overall hub activity indicators provide status outputs for external LEDs. 

特性 Features

·USB 2.0 compliant interface
·Multiple Transaction Translators (MTT)
·Regulated +3.3V output power
·Individual port and hub activity LED indicators
·Individual or ganged port power enables
·Individual or global overcurrent sensing
·Single 5V or 3.3V power supply
·Single 12 MHz Crystal
·48-pin QFN and LQFP package options

应用 Application

·USB port expansion
·POS terminals
·Test instrumentation
·Factory automation and process controls
·Industrial applications