USB3250(2004) Datasheet - SMSC -> Microchip

Product Description
   The GT3200 and USB3250 are USB2.0 physical layer transceiver (PHY) integrated circuits. SMSC's proprietary technology results in low power dissipation, which is ideal for building a bus powered USB2.0 peripheral. The PHY can be configured for either an 8-bit unidirectional or a 16-bit bidirectional parallel interface, which complies with the USB Transceiver Macrocell Interface (UTMI) specification. It supports 480Mbps transfer rate, while remaining backward compatible with USB 1.1 legacy protocol at 12Mbps.

PRODUCT FEATURES 
■ USB-IF "Hi-Speed" certified to USB2.0 electrical
   specification
■ Interface compliant with the UTMI specification
   (60MHz 8-bit unidirectional interface or 30MHz 16-bit
   bidirectional interface)
■ Supports 480Mbps High Speed (HS) and 12Mbps
   Full Speed (FS) serial data transmission rates
■ Integrated 45Ω and 1.5kΩ termination resistors
   reduce external component count
■ Internal short circuit protection of DP and DM lines
■ On-chip oscillator operates with low cost 12MHz
   crystal
■ Robust and low power digital clock and data recovery
   circuit
■ SYNC and EOP generation on transmit packets and
   detection on receive packets
■ NRZI encoding and decoding
■ Bit stuffing and unstuffing with error detection
■ Supports the USB suspend state, HS detection, HS
   Chirp, Reset and Resume
■ Support for all test modes defined in the USB2.0
   specification
■ Draws 72mA (185mW) maximum current
   consumption in HS mode - ideal for bus powered
   functions
■ On-die decoupling capacitance and isolation for
   immunity to digital switching noise
■ Available in three 64-pin TQFP packages (GT3200)
   or a 56-pin QFN package (USB3250)
■ Full industrial operating temperature range from
   -40oC to +85oC (ambient)

APPLICATIONs
The Universal Serial Bus (USB) is the preferred interface to connect high-speed PC peripherals.
■ Scanners
■ Printers
■ External Storage and System Backup
■ Still and Video Cameras
■ PDAs
■ CD-RW
■ Gaming Devices