The Microchip USB84602 is a low-power, OEM configurable, MTT (Multi-Transaction Translator) USB 2.0 hub controller with 2 downstream ports and advanced features for embedded USB applications. The USB84602 is compliant with the USB 2.0 Specification and has passed AEC-Q100 testing. It includes advanced USB features, like; USB 2.0 Link Power Management and High-Speed Inter-Chip (HSIC) USB Electrical Specification Revision 1.0 for low power consumption. The USB84602 will attach to an upstream port as a Full-Speed hub or as a Full-/Hi-Speed hub, while the  2 downstreams ports support Low-Speed, Full-Speed, and Hi-Speed (if operating as a Hi-Speed hub).  The HSIC  interface is available as an updsteram port option, and provides  support  Hi-Speed operation, only.

Meeting the desire of consumers for a “connected vehicle,” Microchip’s FlexConnect technology allows for easy port reversals or “role swapping.” The USB84602’s downstream port 1 is able to swap with the upstream host port, thus transferring the host capability to the product connected to port1, such as smartphones and tablets. This unique capability allows for the smartphone ecosystem of software and applications to be connected to the automobile infotainment system.

The USB84602 has been specifically optimized for embedded systems where high performance, and minimal BOM costs are critical design requirements. Standby mode power has been minimized and reference clock inputs can be aligned to the customer’s specific application. Flexible power rail options ease integration into energy efficient designs by allowing the USB84604 to be powered in a single-source (VBUS (5V), VBAT, 3.3V) or a dual-source (VBAT + 1.8, 3.3V + 1.8) configuration.  The USB-IF Battery Charger specificaiton (revision 1.2) is supported on up and downstream ports,. In  addition, all required resistors on the USB ports are integrated into the hub, including all series termination and pull-up/pull-down resistors on the D+ and D– pins

 

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The USBF129 flash memory device is also offered as a companion chip to the USB84602.  It is factory pre-programmed with application firmware and default hub configuration settings. The USBF129 memory function assures proper functionality, providing for decreased development time and engineering resource, and overall faster time to market. 

Highlights

• Hub Controller IC with 2 downstream ports
• High-Speed Inter-Chip (HSIC) support
  • Upstream port selectable between HSIC or USB 2.0
• USB-IF Battery Charger revision 1.2 support on up and downstream ports (DCP, CDP, SDP)
• Battery charging support for Apple® devices
• FlexConnect: Downstream port 1 able to swap with upstream port, allowing master capable devices to control other devices on the hub
• USB to I2C™/SPI bridge endpoint support
• USB Link Power Management (LPM) support
• SUSPEND pin for remote wakeup indication to host
• Start Of Frame (SOF) synchronized clock output pin
• Vendor Specific Messaging (VSM) support
• Enhanced OEM configuration options available through OTP or SMBus Slave Port
• Flexible power rail support
  • VBUS (5V) or VBAT only operation
  • 3.3V only operation
  • VBAT + 1.8V operation
  • 3.3V + 1.8V operation
• 48-pin (7x7mm) SQFN, RoHS compliant package

Target Applications

• Media Hubs
• Infotainment Head Units
• Break-Out- Boxex
• After market automotive products
  • GPS systems
  • Infotainment systems
  • Advancd instrumentations and controls
• LCD Monitors  
• Multi-function USB Peripherals
• PC Motherboards
• Mobile PC Docking
• Embedded Automotive Systems