The Microchip USB4914 is a USB2.0 Hi-Speed Hub with unique Smart Hub features targeted to automotive consumer ports and head unit applications. The USB4914 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.
Architected for USB Power Delivery(PD) 3.0 support