Usb 2.0 Ata/ Atapi Controller 100-Pin STQFP

The USB97C202 is a USB2.0 Mass Storage Class Peripheral Controller intended for use with standard ATA-5 and -6 hard drives and standard ATAPI-5 devices. The device consists of a USB2.0 PHY and SIE, buffers, Fast 8051 microprocessor with expanded scratchpad and 768 of program SRAM, internal 48 KB program ROM, and an ATA-66 compatible interface. Provisions for optional external Flash Memory up to 64K bytes for program storage is provided. A serial EEPROM which can be modified via USB from the host provides unique VID/PID/Serial numbers, as well as optional configuration information. Internal 768 Bytes of scratchpad SRAM are also provided. This internal SRAM can also be used for program storage to implement program upgrade via USB download to external “boot block” Flash program memory, if desired. Seven GPIO pins are provided for controlling external power control elements and sensing specialized drive functions. Provisions are made to allow dynamic attach and re-attach to the USB bus to allow hot swap of drives to be implemented.

• 2.5 Volt, Low Power Core Operation
• 3.3 Volt I/O with 5V input tolerance
• Complete USB Specification 2.0 Compatibility
  • Includes USB2.0 Transceiver
  • A Bi-directional Control and a Bi-directional Bulk Endpoint are provided.
• Complete System Solution for interfacing ATA or ATAPI devices to USB2.0 bus
  • Supports USB Mass Storage Compliant Bootable BIOS
  • Supports ATA6 Drive capacities up to 2048GB
  • True UDMA Mode 4 transfer rates
  • Support for ATAPI Devices:
  • CD-ROM
  • CD-R
  • CD-RW
  • DVD
  • DVD/R/W
• 8051 8 bit microprocessor
  • Provides low speed control functions
  • 30 Mhz execution speed at 4 cycles per instruction average
  • 768 Bytes of internal SRAM for general purpose scratchpad or program execution while re-flashing external ROM
• Double Buffered Bulk Endpoint
  • Bi-directional 512 Byte Buffer for Bulk Endpoint
  • 64 Byte RX Control Endpoint Buffer
  • 64 Byte TX Control Endpoint Buffer
• Internal or External Program Memory Interface
  • 48K Byte Internal ROM or optional 64K Byte External Code Space using Flash, SRAM, or EPROM Memory
• On Board 12Mhz Crystal Driver Circuit
• Internal PLL for 480Mhz USB2.0 Sampling, 30Mhz MCU clock, and 60Mhz ATA clock
• Supports firmware upgrade via USB bus if “boot block” Flash program memory is used for optional external program memory
• 7 GPIOs for special function use: LED indicators, button inputs, etc.
  • Inputs capable of generating interrupts with either edge sensitivity
  • USB High Speed LED
  • Serial EEPROM interface for VID/PID/Serial Number Customization (Required for internal ROM operation)
• Can share drive in MP3 player and 1394/USB applications by isolating the IDE Interface with other controllers.
• 100 Pin STQFP (12x12x1.4 body, 2mm footprint) or 100 Pin TQFP (14x14x1.4 body, 2mm footprint) package.