USB24915P数据手册Microchip中文资料规格书

描述 Description

The Microchip USB24915P  is a USB2.0 Hi-Speed Hub with unique Smart Hub features targeted to automotive consumer ports and head unit applications. The USB24915P is compliant with the USB 2.0 Specification and has passed AEC-Q100, Grade 2 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, power delivery support (USB PD 3.0), security, LED lighting, and an 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. 

特性 Features

• 1 Upstream port for USB Host connection
• 4 downstream ports; two Type C Power Delivery ports and two Type A ports
• Patented Multi-Host Endpoint Reflector
• Device features to enable smart phone automotive sessions with head unit display
• Architected for USB Power Delivery(PD) 3.0 support with a 32 bit, embedded microcontroller in the hub executing  PD stack and system policy manager. SPI Flash provides flexibility for specification revisions and evolving system needs.
• 32 bit, embedded microcontroller executes PD stack, thermal response, and power balancing between ports
• Integrated USB Host for in-field firmware upgrades from down-facing port
• USB Battery Charging, revision 1.2, Apple, and China profiles
• USB to I2C/I2S, SPI, UART, and GPIO
• Security features: Secure BootRom, firmware hash/challenge, and authentication
• Enhanced OEM configuration options available through OTP configuration via SMBus or USB
• I2S for audio support; Asynchronous In, Adaptive Out, 48KHz, two channel (16 bits/channel)
• Flexible I2S capabilities via firmware  update
• MultiTRAKDedicated transaction translator per port
• PortMapConfigurable port mapping and disable sequencing
• PortSwapConfigurable differential intra-pair signal swapping
• PHYBoost Configurable USB transceiver drive strength for signal integrity
• VariSense programmable USB receiver sensitivity
• USB Link Power Management (LPM) support
• Vendor Specific Messaging (VSM) support
• 5V single supply with integrated 5V to 3.3V regulator
• 72 pin (10x10mm) VQFN
• Target Applications: Media hubs, Infotainment Head Units, After-Market GPS
• AEC-Q100, Grade 2 (-40 to +105C)