USB97C202
USB 2.0 ATA/ATAPI Controller

	General Description
	Data Sheet, Application Notes, Drivers and Design Tools

Features

	2.5 Volt, Low Power Core Operation
	3.3 Volt I/O with 5V Input Tolerance
	Complete USB Specification 2.0 Compatibility Includes USB 2.0 Transceiver A Bi-Directional Control and A Bi-Directional Bulk Endpoint Are Provided
	Complete System Solution for Interfacing ATA or ATAPI Devices to USB 2.0 Bus Supports USB Mass Storage Compliant Bootable BIOS Supports ATA-6 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 USB 2.0 Sampling, 30Mhz MCU Clock, and 60Mhz ATA Clock
	Supports Firmware Upgrade Via USB Bus if "Boot Block" Flash Program Memory Is Used for External Program Memory
	Seven 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) Lead-Free RoHS Compliant Package

General Description

The USB97C202 is a USB 2.0 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 USB 2.0 PHY and SIE, buffers, Fast 8051 microprocessor with expanded scratchpad and 768 bytes 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.

USB97C202 Data Sheet, Application Notes,
Drivers and Design Tools

Description	File Name	File Size	Date
USB97C202 Data Sheet	97c202rev16.pdf	183K	1/9/07
Evaluation Board
EVB-97C202     Schematic, ORCAD 7.2     Schematic, PDF     Bill of Materials, PDF     Users Guide     Gerber Files	evb97c202.dsn evb97c202sch.pdf evb97c202bom.pdf evb97c202user.pdf evb97c202gerber.zip	5549K 94K 68K 190K 483K	5/31/05 5/31/05 5/31/05 5/31/05 3/4/05
Application Notes
Application Note 9-18: SMSC USB 2.0 Analog Routing Guidelines	an918.pdf	142K	7/9/02
Application Note 12-9: USB 2.0 Mass Storage Controller Memory Configuration Guide	an129.pdf	161K	3/28/06
Application Note 13-12: USB2005 and USB97C202 Sharing ATA/ATAPI Drive with Another Controller	an1312.pdf	168K	7/29/05
USB97C202 EEPROM Programming Utility
Allows manufacturers to program their own VID/PID/etc. in the USB97C202's required external serial EEPROM.	usb97c202util.exe	516K	10/9/02
Object Code
Download USB97C202 Object Code	OBJ ATA
Using the Adobe® Acrobat® Reader	aacrobat.html