USB7252中文资料low-power, OEM configurable, USB 3.1 Gen 2 hub controller数据手册Microchip规格书

描述 Description

TheMicrochip USB7252 SmartHub™ IC is a low-power, OEM configurable, USB 3.1 Gen 2hub controller with 4 downstream ports and advanced features for embedded USBapplications. The USB7252 is fully compliant with the Universal Serial BusRevision 3.1 Specification and USB 2.0 Link Power Management Addendum. The USB7252supports 10 Gbps Super-Speed Plus (SS+), 5 Gbps Super-Speed (SS), 480 MbpsHi-Speed (HS), 12 Mbps Full-Speed (FS), and 1.5 Mbps Low-Speed (LS) USBdownstream devices on all enabled downstream ports.

ASmartHub IC is defined as a USB hub that integrates system levels functionstypically associated with a separate MCU or processor.  The USB7252SmartHub IC enables communication to other peripherals in addition to USB. ThisI/O Bridging capability allows the host to seamlessly interface to peripheralsvia I2C, SPI or GPIOs over USB.  The USB7252 also enable a downstreamdevice to take control of the host system by swapping roles and becoming thehost port. The USB7252 can also switch between two different hosts if required.This role changing technology is called FlexConnect and can be initiatedthrough hardware or software commands.

TheUSB7252 supports native Type-C connectivity on two of thedownstream ports. The hub includes internal Type-C CC pin logic and an internalUSB 3.1 Gen 2 multiplexer to support both Type-C insertion orientations. TheUSB7252 supports an additional 2 Type A ports downstream - 1 x USB3.1 Gen2 and 1 x USB2.0.  The hub also supports legacy USB speeds (HS/FS/LS) through a dedicated USB2.0 hub controller that is the culmination of six generations of Microchip hubfeature controller design and experience with proven reliability,interoperability, and device compatibility. The SuperSpeed Plus hub controlleroperates in parallel with the USB 2.0 controller, decoupling the 10 Gbps SSdata transfers from bottlenecks due to the slower USB 2.0 traffic.

TheUSB7252 supports downstream battery charging through integrated batterycharger detection circuitry supporting the USB-IF Battery Charging (BC1.2)detection method and most Apple devices. The USB7252 provides the batterycharging handshake and supports the following USB-IF BC1.2 chargingprofiles: DCP: Dedicated Charging Port (Power brick with nodata); CDP: Charging Downstream Port (1.5A with data); SDP: StandardDownstream Port (0.5A with data); Custom profiles loaded via SPI EEPROM orOTP.

MPLABConnect Configurator, Microchip’s proprietary software utility, can be used toprogram On-chip One Time Programmable (OTP) ROM for the USB7252 which storesrequired register settings to ensure the desired start up configuration atpower on. All LED, GPIOs and port control signal pins are under firmwarecontrol, allowing for maximum operational flexibility. However, for even moresimplicity, the USB7252 can be configured through a series of external low-costresistor bootstraps. A handful of bootstap pins are available on the USB7252 toenable standard configurations for GPIOs and downstream ports. No OTPprogramming required.

*The USBCheck online design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account.

特性 Features

Four downstream USB3.1 Gen2 / 2.0 ports
• Legacy USB Type B support on upstream port
• Native USB Type-C support on two downstream ports
Integrated Hub Feature Controller (HFC) enabling I/O Bridging and FlexConnect
• I/O Bridging: Host communication to external peripherals USB to I2C/SPI/GPIO bridge endpoint support
• FlexConnect: Host port Swapping and Switching to downstream Devices Reversible upstream and downstream roles on command
Battery Charging - USB-IF rev1.2 support on downstream ports (DCP, CDP, SDP) including legacy Apple® iOS, Blackberry®, China Charging and many others
Compatible with MSFT Windows 10, 8, 7, XP, Apple OS X 10.4+, and Linux hub drivers
Available in 100-pin (12mm x 12mm) VQFN RoHS compliant package
Industrial grade temperature support (−40°C to +85°C)

简介

USB7252属于集成电路（IC）的控制器。由制造生产的USB7252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。