原标题：Microchip USB5906六端口USB 3.1智能集线器控制方案

　　microchip公司的USB5906是低功耗OEM可配置的六端口USB 3.1智能集线器控制器,支持单个USB Type-CTM UFP,具有嵌入USB应用的先进特性,支持5 Gbps Super-Speed (SS),480Mbps Hi-Speed (HS), 12 Mbps Full-Speed (FS)以及1.5 Mbps Low-Speed (LS) USB,主要用在USB集线器,PC主板,PC监视器坞站,笔记本电脑基座配件以及多功能USB 3.1Gen 1外设.本文介绍了USB5906亮点和优势,框图,评估板EVB-USB5807/6主要特性,框图,电路图和PCB设计图.

　　The Microchip USB5906 hub is a low-power, OEM configurable, USB 3.1 Gen 1 hub controller with 6 downstream portsand advanced features for embedded USB applications. The USB5906 is fully compliant with the Universal Serial BusRevision 3.1 Specification and USB 2.0 Link Power Management Addendum. The USB5906 supports 5 Gbps Super-Speed (SS), 480 Mbps Hi-Speed (HS), 12 Mbps Full-Speed (FS), and 1.5 Mbps Low-Speed (LS) USB downstreamdevices on all enabled downstream ports.

　　The USB5906 supports the legacy USB speeds (HS/FS/LS) through a dedicated USB 2.0 hub controller that is the culminationof five generations of Microchip hub controller design and experience with proven reliability, interoperability,and device compatibility. The SuperSpeed hub controller operates in parallel with the USB 2.0 hub controller, decouplingthe 5 Gbps SS data transfers from bottlenecks due to the slower USB 2.0 traffic.

　　The USB5906 hub feature controller enables OEMs to configure their system using “Configuration Straps.” These strapssimplify the configuration process, assigning default values to USB 3.1 Gen 1 ports and GPIOs. OEMs can disable ports,enable battery charging, and define GPIO functions as default assignments on power-up, removing the need for OTPor external SPI ROM.

　　The USB5906 supports downstream battery charging via the integrated battery charger detection circuitry, which supportsthe USB-IF Battery Charging (BC1.2) detection method and most Apple devices. The USB5906 provides the batterycharging handshake and supports the following USB-IF BC1.2 charging profiles:

　　• DCP: Dedicated Charging Port (Power brick with no data)

　　• CDP: Charging Downstream Port (1.5A with data)

　　• SDP: Standard Downstream Port (0.5A with data)

　　• Custom profiles loaded via SMBus or OTP

　　Additionally, the USB5906 includes many powerful and unique features such as:

　　The Hub Feature Controller, which provides an internal USB device dedicated for use as a USB to I2C/UART/SPI/GPIO interface, allowing external circuits or devices to be monitored, controlled, or configured via the USB interface.

　　FlexConnect, which provides flexible connectivity options. One of the USB5906’s downstream ports can be reconfiguredto become the upstream port, allowing master capable devices to control other devices on the hub.

　　PortSwap, which adds per-port programmability to USB differential-pair pin locations.PortSwap allows direct alignmentof USB signals (D+/D-) to connectors to avoid uneven trace length or crossing of the USB differential signals on thePCB.

　　PHYBoost, which provides programmable levels of Hi-Speed USB signal drive strength in the downstream port transceivers. PHYBoost attempts to restore USB signal integrity in a compromised system environment. The graphic on the right shows an example of Hi-Speed USB eye diagrams before and after PHYBoost signal integrity restoration. Ina compromised system environment.

　　VariSense, which controls the USB receiver sensitivity enabling programmable levels of USB signal receive sensitivity.This capability allows operation in a sub-optimal system environment, such as when a captive USB cable is used.

　　Port Split, which allows for the USB3.1 Gen1 and USB2.0 portions of downstream ports 5 and6 to operate independentlyand enumerate two separate devices in parallel in special applications.

　　USB Power Delivery Billboard Device, which allows an internal device to enumerate as a Billboard class device whena Power Delivery Alternate Mode negotiation has failed. The Billboard device will enumerate temporarily to the host PCwhen a failure occurs, as indicated by a digital signal from an external Power Delivery controller.

　　The USB5906 can be configured for operation through internal default settings. Custom OEM configurations are supportedthrough external SPI ROM or OTP ROM. All port control signal pins are under firmware control in order to allowfor maximum operational flexibility, and are available as GPIOs for customer specific use.The USB5906 is available in commercial (0℃ to +70℃) and industrial (-40℃ to +85℃) temperature ranges.

　　USB5906亮点:

　　• USB Hub Feature Controller IC Hub with:

　　- 6 USB 3.1 Gen 1 legacy downstream ports

　　- USB Type-CTM upstream port

　　• USB-IF Battery Charger revision 1.2 support onup & downstream ports (DCP, CDP, SDP)

　　• FlexConnect: Downstream port able to swap withupstream port, allowing master capable devicesto control other devices on the hub

　　• Internal Hub Feature Controller device enables:

　　- USB to I2C/SPI/GPIO bridge endpoint support

　　- USB to internal hub register write and read

　　• USB Link Power Management (LPM) support

　　• Enhanced OEM configuration options availablethrough either OTP or SPI ROM

　　• Available in 100-pin (12mm x 12mm) VQFNRoHS compliant package

　　• Commercial and industrial grade temperaturesupport

　　USB5906目标应用:

　　• Standalone USB Hubs

　　• Laptop Docks

　　• PC Motherboards

　　• PC Monitor Docks

　　• Multi-function USB 3.1 Gen 1 Peripherals

　　USB5906主要优势:

　　• USB 3.1 Gen 1 compliant 5 Gbps, 480 Mbps,12 Mbps, and 1.5Mbps operation

　　- 5V tolerant USB 2.0 pins

　　- 1.32V tolerant USB 3.1 Gen 1 pins

　　- Integrated termination and pull-up/down resistors

　　• Native USB Type-C Support

　　- Integrated Multiplexer on USB Type-C enabledports

　　- USB 3.1 Gen 1 PHYs are disabled until a validUSB Type-C attach is detected, saving idle power

　　• Supports battery charging of most popular batterypowered devices on all ports

　　- USB-IF Battery Charging rev. 1.2 support(DCP, CDP, SDP)

　　- Apple® portable product charger emulation

　　- Chinese YD/T 1591-2006 charger emulation

　　- Chinese YD/T 1591-2009 charger emulation

　　- European Union universal mobile charger support

　　- Support for Microchip UCS100x family of batterycharging controllers

　　- Supports additional portable devices

　　• Smart port controller operation

　　- Firmware handling of companion port powercontrollers

　　• On-chip microcontroller

　　- manages I/Os, VBUS, and other signals

　　• 8 KB RAM, 64 KB ROM

　　• 8 KB One-Time-Programmable (OTP) ROM

　　- Includes on-chip charge pump

　　• Configuration programming via OTP ROM,

　　SPI ROM,or SMBus

　　• FlexConnect

　　- Reversible upstream and downstream Port 1 roleson command

　　• PortSwap

　　- Configurable USB 2.0 differential pair signal swap

　　• PHYBoostTM

　　- Programmable USB transceiver drive strength forrecovering signal integrity

　　• VariSenseTM

　　- Programmable USB receive sensitivity

　　• Port Split

　　- USB2.0 and USB3.1 Gen1 port operation can besplit for custom applications using embeddedUSB3.x devices in parallel with USB2.0 devices.

　　• USB Power Delivery Billboard Device Support

　　- Internal port can enumerate as a Power DeliveryBillboard device to communicate Power DeliveryAlternate Mode negotiation failure cases to USBhost

　　• Compatible with Microsoft Windows 10, 8, 7, XP,Apple OS X 10.4+, and Linux hub drivers

　　• Optimized for low-power operation and low thermaldissipation

　　• Package

　　- 100-pin VQFN (12mm x 12mm)

　　图1.USB5906内部框图

　　评估板EVB-USB5807/6

　　The EVB-USB5806 is a demonstration and evaluation platform that provides the necessary requirements and interface options for evaluating the USB5806,a 6-Port SS/HS USB Smart Hub on a 4-layer RoHS-compliant Printed Circuit Board (PCB). This will allow the user to gain an understanding of the product and accelerate the integration of the USB5806 into the user’s design. The EVB-USB5806 is compliant with the USB 3.1 (Gen1) Specification and supports SuperSpeed (SS), High-Speed (HS), Full-Speed (FS), and Low-Speed (LS) USB signaling for complete coverage of all defined USB operation speeds. The evaluation platform supports six downstream ports that are USB 2.0 and USB 3.1 Gen1 compliant, battery charging on all downstream ports (maximum of 13A at any one time) and is configured for operation through internal default settings and supports custom configurations through SMBus or through the external 16-Mbit SPI Flash device. The EVB-USB5806 demonstrates driver compatibility with Microsoft® Windows® 8x, Windows 7, Windows XP, Mac OS® X 10.4+, and Linux® hub drivers.

　　评估板EVB-USB5807/6主要特性:

　　Microchip’s FlexConnect, PortSwap, PHYBoost™, and VariSense™ technologies.

　　USB5806 in a 100-pin QFN RoHS compliant package.

　　USB 3.1 Gen 1 compliant (SS, HS, FS, and LS operation).

　　USB pins are 5 V tolerant.

　　Self powered operation.

　　Six downstream USB 2.0 / USB 3.1 Gen 1 ports

　　All downstream ports support individual port power and overcurrent sense.

　　All downstream ports can be enabled for battery charging with the battery charging select switch SW1 (BC1.2 or SE1, 2.1A max per port).

　　Onboard SPI Flash for external downloadable firmware.

　　Low-cost 4-layer space saving design.

　　Operates from a single voltage (+12.0 V, regulated) external power supply.

　　Onboard 25 MHz crystal or external clock input.

　　Single onboard +5.2 V, 6 Amp regulator. MCP19035 based switching regulator design provides 5.2 V at up to 15 A when using a 12 V, 85 W supply.

　　Single onboard +3.3 V, 0.5 Amp regulator.

　　Single onboard +1.2 V, 2 Amp regulator.

　　Port Power LED indicators (note: Requires a 12V, 85W supply).

　　SPI Flash activity blue LED indicator. Reset red LED indicator. Green LED indicators for 5V, 3.3V, 1.2V supplies.

　　Dual color LED USB Suspend indicator (green=run/yellow=suspend).

　　USB Type-C upstream green LED charging capability indicators: 3A, 1.5A, Legacy.

　　SMBus current monitor on each USB Type-C downstream port.

　　Terminal block connector for use with an external bench supply.

　　Removable/non-removable downstream ports can be configured with switch SW2

　　图2.评估板EVB-USB5807/6框图

　　图3.评估板EVB-USB5807外形图

　　图4.评估板EVB-USB5806外形图

　　评估板EVB-USB5807/6材料清单:

　　详情请见:

EVB-USB5806_A-BOM.xls

00002242A.pdf

EVB-USB5806-sch.pdf

50002543A.pdf