USB24926P数据手册Microchip中文资料规格书

描述 Description

The Microchip USB24926P is a USB2.0 Hi-Speed Hub with unique Smart Hub features targeted to automotive consumer ports and head unit applications. The USB24926P 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;  Dual UpSTream (DUST) architecture, battery charging support for industry profiles, power delivery support (USB PD30.), 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 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. All four downstream facing ports can be configured to the second, single-port USB hub, while the other three ports remain attached to the original USB Host. By providing the capability to activate a second USB network through internal muxing, dedicated bandwidth is assured for single-port USB hub. 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. 

特性 Features

• Patented Dual UpStream (DUST) Architecture with primary hub and secondary single port hub
• 4 downstream ports; two Type C Power Delivery ports and two Type A ports
• 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
• ADC inputs for external sensor input
• LED lighting support
• Security features: Secure BootRom, firmware hash/challenge, and authentication
• Enhanced OEM configuration options available through OTP configuration or SMBus Slave Port
• I2S for audio support; Asynchronous In, Adaptive Out, 48KHz, two channel (16 bits/channel)
• Flexible I2S capabilities via firmware update
• MultiTRAK Dedicated transaction translator per port
• PortMap Configurable port mapping and disable sequencing
• PortSwap Configurable 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)