The USB82642 offers a versatile, cost-effective and energy-efficient hub controller with 2 downstream USB2.0 ports and a Secure Digital/Memory Stick flash media interface. The flash media interface can support sustained transfer rates exceeding 35 MB/s, if the flash media, SDIO client and host support those rates.

Applications

• Automotive integrated head end unit
• Automotive media player dock
• Automotive consumer connectivity ports
• Automotive breakout box designs
• Portable device charging via USB
• Rear seat infotainment access

Description

The USB82642 offers a versatile, cost-effective and energy-efficient hub controller with 2 downstream USB 2.0 ports and a Secure Digital/Memory Stick flash media interface. The flash media interface can support sustained transfer rates exceeding 35 MB/s, if the flash media, SDIO client and host support those rates.

The USB82642 is designed for applications that demand low power and a small footprint without compromising performance. Offering a high level of interoperability, the USB82642 allows system designers the flexibility of independent access to a wide selection of flash media and additional downstream USB access ports.

The USB82642 consists of USB 2.0 device transceivers with 2-port hub functionality, a fast 8051 microprocessor with Secure Digital/Memory Stick interfaces in a single, fully-integrated chip. It offers USB expansion as well as a flash media read/write interface capable of ultra high performance operation. Various programmable features, including SMSC's unique PortMap, PortSwap and PHYBoost, are designed to aid system designers in simplifying PCB layout and optimizing bill-of-material cost.

• Ultra fast flash media reader/writer with two exposed Hi-Speed downstream ports for external peripheral expansion
• Supports Secure Digital™ (SD) and SD High Capacity™ (SDHC), SD Extended Capacity™ (SDXC), MultiMediaCard™ (MMC) and Memory Stick® (MS), MS PRO™ and MS PRO-HG™ cards
• Fully compatible with the USB 2.0 specification
• Control of peripheral I2C devices by USB host.
• Specifically designed, fabricated, tested, characterized and qualified for automotive applications
• Service and support
• Built to more exacting requirements than AEC-Q100
• PortMap: Flexible port mapping and port disable sequence supports multiple platform designs
• PortSwap: Programmable ULSB differential-pair pin locations ease PCB design by aligning USB signal traces directly to connectors
• PHYBoost: Programmable USB transceiver drive strength for recovering signal integrity due to compromised system environment
• External and internal memory support for software customization
• Enhanced OEM configuration options available through an external I²C or SPI flash memory
• Customizable Vendor ID, Product ID and Device ID
• Integrated 3.3 V to 1.8 V regulator
• Enhanced ESD protection performance
• 48-pin (7 x 7 mm), QFN lead-free, RoHS compliant package
• Temperature range: -40 °C to +85 °C