USB2422中文资料USB Hubs数据手册Microchip规格书

描述 Description

The Microchip USB2422 hub is a low-power, single transaction translator, hub controller IC with two downstream ports for embedded USB solutions. The Microchip hub controller can attach to an upstream port as a Hi-Speed and Full-Speed hub or as a Full-Speed only hub. The Microchip hub supports Low-Speed, Full-Speed, and Hi-Speed (when configured as a Hi-Speed hub) downstream devices on the enabled downstream ports.

All required resistors on the USB ports are integrated into the hub. This includes all series termination resistors on D+ and D- pins and all required pull-down and pull-up resistors on D+ and D- pins. The over-current sense inputs for the downstream facing ports have internal pull-up resistors.



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特性 Features

Highlights
• High performance, low-power, small footprint hub controller IC with two downstream ports
• Fully compliant with the USB 2.0 Specification
• Optimized for minimal bill-of-materials and low-cost designs
Features
• Supports the USB Battery Charging Specification, Revision 1.1
• Fully integrated USB termination and pull-up/pulldown resistors
• Supports a single external 3.3 V supply source; internal regulators provide 1.2 V internal core voltage
• On-chip driver for 24 MHz crystal resonator or external 24 MHz clock input
• ESD protection up to 6 kV on all USB pins
• Supports self-powered operation
• Microchip hub contains a built-in default configuration; no external configuration options or components are required
• Downstream ports as non-removable ports
• Downstream port power control and over-current detection on an individual or ganged basis
• Supports compound devices on a port-by-port basis
• 24-pin SQFN (4x4 mm), RoHS-compliant package
• Commercial temperature range support: 0ºC to +70ºC
• Industrial temperature range support: -40ºC to +85ºC
Target Applications
• LCD Monitors and TVs
• Multi-function USB Peripherals
• PC motherboards
• Set-top boxes, DVD players, DVR/PVR
• Printers and scanners
• PC media drive bay
• Portable hub boxes
• Mobile PC docking
• Embedded systems
• Gaming consoles
• Cable/DSL modems
• HDD enclosures
• KVM switches
• Server front panels
• Point-of-Sale (POS) systems
• IP telephony
• Automobile/home audio systems
• Thin client terminals

应用 Application

·LCD Monitors and TVs
·Multi-function USB Peripherals
·PC motherboards
·Set-top boxes, DVD players, DVR/PVR
·Printers and scanners
·PC media drive bay
·Portable hub boxes
·Mobile PC docking
·Embedded systems
·Gaming consoles
·Cable/DSL modems
·HDD enclosures
·KVM switches
·Server front panels
·Point-of-Sale (POS) systems
·IP telephony
·Automobile/home audio systems
·Thin client terminals

简介

USB2422属于集成电路（IC）的控制器。由制造生产的USB2422控制器该系列产品主要用于在采用不同通信协议和/或信令方法的端点之间提供信息连接。示例包括将 I2C 总线连接到 UART，将 USB 连接到 I2C、SPI、以太网或 UART、以太网 MAC 和 PHY 等的器件。此外，还包括用于通过为点对点通信设计的接口建立多路连接的器件，例如 USB 集线器控制器。