SMSC DS – USB97C100

Page 2

Rev. 01/03/2001

GENERAL DESCRIPTION

The USB97C100 is a flexible, general purpose USB peripheral interface and controller ideally suited for multiple

endpoint applications. The USB97C100 provides an ISA-like bus interface, which will allow virtually any PC peripheral to

be placed at the end of a USB connection. Its unique dynamic buffer architecture overcomes the throughput

disadvantages of existing fixed FIFO buffer schemes allowing maximum utilization of the USB connection’s overall

bandwidth. This architecture minimizes the integrated microcontroller’s participation in the USB data flow, allowing back-

to-back packet transfers to block oriented devices. The efficiency of this architecture allows floppy drives to coexist with

other peripherals such as serial and parallel ports on a single USB link.

The USB97C100 allows external program code to be downloaded over the USB to allow easy implementation of varied

peripheral USB Device Classes and combinations. This also provides a method for convenient field upgrades and

modifications.

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