USB2524数据手册集成电路（IC）的控制器规格书PDF

描述 Description

USB2524 is the industry's first USB switching hub that combines a USB Hi-Speed hub and switching functionality in a single device. Equipped with two upstream ports and four downstream ports, USB2524 enables USB device sharing and switching between two USB hosts without \"cable swapping\". Requiring no more than standard USB hub driver support, the USB2524 appears as a 4-port USB hub to either USB host system and supports standard USB topology.
Device Sharing and Switching
Per-port switching provides maximum device sharing functionalityFlexible switching modes ease system designProgrammable auto-switch mode enables unique applicationsHigh Throughput
MultiTRAK architecture provides dedicated TT for every downstream portMaximum USB full-speed data rate at 12 Mbps per port even under full loadAggregate 960 Mbps maximum data rate when both Hi-Speed hosts are activeMinimum Software Overhead
Appears as a standard USB 2.0 hub controller on either host systemRequires no more than standard USB hub-class driver support already native in most operating systemsStandard USB connect and disconnect behavior as device switched from one host to the otherEase of Integration
Small 8x8 mm 56QFN package occupies minimum PCB spaceFlexible configuration options ease embedded system designUSB-IF certified silicon building block ensures full USB complianceApplications
USB2524 USB MultiSwitch hub may be used in a number of applications:
Desktop PC drive-baysMobile PC dock stations and port replicatorsAll-in-one and photo printersLCD monitorsKVM switchesUSB device sharing peripheralsSet-top boxesDVD/HDD recorders and playersAny USB dual-role host and device systems*The USBCheck online design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account.

特性 Features

General Features·Compliant with USB 2.0 Specification
·Hub controller IC with two upstream ports and four downstream ports
·MultiTRAK™ technology provides one transaction translator per port
·Default configuration with pin selectable options
·Four flexible downstream port switching modes
·Flexible OEM configuration options
·56-pin QFN RoHS Compliant Package
Hardware Features·Integrated 1.8V regulator
·Integrated termination and pull-up/pull-down resistors
·Internal short circuit protection of DP and DM lines
·On-chip oscillator uses low cost 24MHz crystal
·Supports individual over-current protection and power control
·3.3V I/O with 5V tolerance
OEM Selectable FeaturesThe 4-Port Hub supports several OEM selectable features:·Customize vendor ID, product ID, device ID, and product string
·Port switching modes and host ownership of downstream ports
·Select whether the hub is part of a compound device(When any downstream port is permanently hardwired to a USB peripheral device, the hub is part of a compound device)
·Programmable LEDs to support standard green/amber port status or port speed (HS/FS/LS)
·Select the presence of a permanently hardwired USB peripheral device on a port by port basis
·Configure the delay time for filtering the over-current sense inputs
·Configure the delay time for turning on downstream port power
·Configure the polarity of down stream port power control signals
·Indicate the maximum current that the 4-port hub consumes from the USB upstream port
·Indicate the maximum current required for the hub controller
Pin Selectable Options for Default Configuration·Select downstream ports as non-removable ports
·Select downstream ports as disabled ports
·Enable/disable downstream port LED indicators
·Select downstream port power control and over-current detection on a ganged or individual basis
·Select downstream port power control polarity

应用 Application

USB2524 USB MultiSwitch hub may be used in a number of applications:·Desktop PC drive-bays
·Mobile PC dock stations and port replicators
·All-in-one and photo printers
·LCD monitors
·KVM switches
·USB device sharing peripherals
·Set-top boxes
·DVD/HDD recorders and players
·Any USB dual-role host and device systems

简介

USB2524属于集成电路（IC）的控制器。由制造生产的USB2524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。