The Microchip USB4916  is a USB2.0 Hi-Speed Hub with unique Smart Hub features targeted to automotive consumer ports and head unit applications. The USB4916 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;  Multi-Host Endpoint Reflector, 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 Multi-Host Endpoint Reflector employs patented technology such that USB data is 'mirrored" between two USB hosts (Multi-Host) in order to execute USB transactions. This capability is fundamental in delivering architectures for smart phones that require host / device swapping in order to set-up an automotive session, including graphic user interface, from the mobile device to the head unit display. 

Standard USB drivers, which are  native to the operating system, including the CDC/NCM class driver, are utilized to execute device operation. No custom drivers are required.  The Multi-Host Endpoint Reflector is considered a USB controller that is integrated in conjunction with a USB 2.0 Hi-Speed hub and USB2.0 dual role function physical interfaces. 

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

Highlights:

• USB2.0 Hi-Speed Hub
  • 1 Upstream port 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 Multi-Host Endpoint Reflector
• 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
• USB to I2C/I2S, SPI, UART, and GPIO
  • Apple authentication support
  • I2S for audio support; Asynchronous In, Adaptive Out, 48KHz, two channel (16 bits/channel)
  • Flexible I2S capabilities via firmware  update

• Architected for USB Power Delivery(PD) 3.0 support

  • 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

   

• MultiTRAK
  • Dedicated transaction translator per port
• PortMap
  • Configurable port mapping and disable sequencing
• PortSwap
  • 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 (9x9mm) SQFN
• 64-pin (9x9mm) Wettable Flanks VQFN

   

  Target Applications:

   

• Media Hubs
• Infotainment Head Units
• Break-Out- Boxes
• After-market automotive products
  • GPS systems
  • Infotainment systems
  • Advancd instrumentations and controls
• LCD Monitors  
• Multi-function USB Peripherals 
• Embedded Automotive Systems
• Host to Host applications via Ethernet / NCM communication