Overview
The S1R72U16 is an IDE device - USB 2.0 host bridge LSI that supports USB2.0-compliant high-speed mode. The main CPU is capable of controlling USB storage devices connected to this LSI as IDE devices. No USB driver is required. USB devices that can be connected to this LSI are bulk-only transport mass storage class devices (e.g., USB memory) and HUB devices.

FEATUREs
■ Easy use/connect (IDE bus connection)
   Allows USB devices to be controlled as IDE devices
   The main CPU is capable of controlling USB storage devices connected to this LSI as IDE devices. This LSI handles connection processing for the USB hub, no USB driver is required at the main CPU. An ATA/ATAPI driver should be installed at the main CPU.
   A main CPU with an installed ATA/ATAPI driver is capable of controlling USB storage devices via this LSI.
■ Easy use/connect (CPU bus connection)
   Also permits CPU bus connections (interface voltage: 1.8 V to 3.3 V)
   The LSI can also be connected to a memory bus to connect to the main CPU without an IDE bus. An ATA/ATAPI driver should be installed in the main CPU. The registers used to control this LSI are ATA task file registers.
■ High-speed transfer
   Transfer rate 31 MB/s (Seiko Epson figures)
   Transfer rates of up to 31 MB/s can be achieved with ATA100 and USB High-Speed connection.
■ Embedded Host silicon authentication
   High-quality USB signal
   This LSI includes an Embedded Host function (including authentication software) for silicon authentication. The S1R72U16 USB 2.0 PCB Design Guide and S1R72U16 Embedded Host Compliance Manual are also provided to help the user obtain USB logo certification.
■ Product (system) development support functions
   History display
   LSI internal processing history can be displayed using the serial (asynchronous) interface. The S1R72U16 Development Support Manual provides detailed information on this function. This function and the manual provide support for product (system) development.
■ Manuals and tools
   Development manuals and tools (bridge board)
   The following manuals are provided in addition to this data sheet:
   • S1R72U16 Technical Manual
   • S1R72U16 Application Note
   • S1R72U16 Development Support Manual
   • S1R72U16 USB 2.0 PCB Design Guide
   • S1R72U16 Embedded Host Compliance Manual
   • S1R72U16 Evaluation Board Manual
      An IDE device - USB 2.0 host bridge board is also provided for system evaluations in the early stages of product (system) development. *
      * Please contact your nearest Seiko Epson sales office to obtain the IDE device - USB 2.0 host bridge board.