AMEYA360:Microchip USB4927 is a USB2.0 Hi-Speed Hub

　　The Microchip USB4927 is a USB2.0 Hi-Speed Hub with unique Smart Hub features targeted to automotive consumer ports and head unit applications. The USB4927 is compliant with the USB 2.0 Specification and has passed AEC-Q100 testing.  This highly integrated chip optimizes board area and reduces overall system costs, with the incorporation of  leadership functionality, including;  Dual UpSTream (DUST) architecture, battery charging support for industry profiles, embedded 32 bit micro-controller for the implementation of  USB IO bridging and USB Power Delivery.  The multiple downstream USB ports support USB2.0 Low Speed/Full Speed/Hi-Speed with a single USB2.0 Hi-Speed upstream port for host connection.

　　The Dual UpSTream architecture incorporates two USB Hubs into a single-chip device. The two upstream ports connect to a USB Host Port and a USB OTG/Device port. Four of the downstream facing ports can be dynamically configured to the second, single-port USB hub, while the third downstream, non-removable port is always connected to the Upstream USB Host. The non-removable port is targeted for cascading hubs or to connect a USB peripheral, such as a card reader.

　　By providing the capability to activate a second USB network through internal muxing, dedicated bandwidth is assured for the second USB network. This capability can be used in delivering solutions for smart phones that require host / device swapping during the set-up of an automotive session, where the mobile device becomes the USB Host and manages the graphic user interface on the head unit display.

　　Standard USB drivers, which are  native to the operating system, are utilized to execute device operation. No custom drivers are required. .

　　Contact your Microchip local sales support for information on support documents, demonstration application boards, configuration software, datasheet and application notes.

　　Product Features

　　2 Upstream porst for USB Host connection

　　4 downstream ports with dual role (host/device) physical interfaces

　　1 Non-removable port for cascading hubs or attaching card reader device

　　Patented Dual UpSTream (DUST) architecture

　　Device features to enable smart phone automotive sessions with head unit display

　　USB Battery Charging, revision 1.2, support on downstream ports (DCP, CDP, SDP)

　　Battery charging support for China and Apple profiles

　　Apple authentication support

　　I2S for audio support; Asynchronous In, Adaptive Out, 48KHz, two channel (16 bits/channel)

　　Flexible I2S capabilities via firmware  update

　　32 bit, embedded microcontroller in the hub executes  PD stack and system policy manager

　　Interfaces to Microchip UPD350, Power Delivery Interface device

　　Power delivery stack runs from external  SPI Flash

　　SPI Flash provides flexibility for specification revisions and evolving system needs

　　Dedicated transaction translator per port

　　Configurable port mapping and disable sequencing

　　Configurable differential intra-pair signal swapping

　　PHYBoost

　　Programmable USB receiver sensitivity

　　USB Link Power Management (LPM) support

　　Vendor Specific Messaging (VSM) support

　　Enhanced OEM configuration options available through external straps,  OTP configuration or SMBus Slave Port

　　3.3V supply voltage

　　64-pin  SQFN

　　64 pin Wettable Flanks VQFN

　　Media Hubs

　　Infotainment Head Units

　　Break-Out- Boxes

　　GPS systems

　　Infotainment systems

　　Advanced instrumentations and controls

　　LCD Monitors

　　Multi-function USB Peripherals

　　Embedded Automotive Systems