CATC Traffic Generator USB Host Emulator

The CATC Traffic Generator* USB Host Emulator is an invaluable development and test tool for Universal Serial Bus designers, serving as a flexible USB host for the development of USB devices, hubs, and silicon. The emulator enables stress/limit testing of USB designs, and observation of design behavior under faulty bus conditions, thus promoting the development of devices that thoroughly comply with the USB specification. It simplifies the design process and reduces the time required to develop and test USB components, software, and systems.

The Traffic Generator host emulator consists of a user programmable stand-alone box, to generate the USB traffic, and a Windows* (3.1/95/NT*) application program, to assist in creating the desired USB messages and downloading them to the generator box.

The CATC Traffic Generator box can operate stand-alone, or under software control when attached to the parallel port of an Intel386™, Intel486™, or Pentium® processor-based PC; its several operation modes are selected by activating front panel switches or by software control.

The Traffic Generator software enables creation of desired USB traffic bit streams for the generator (and can also display data files recorded by CATC USB Bus & Protocol Analyzers). Any packets can be selected from this file and modified bit by bit. Packets are displayed in an easy-to-use graphical fashion, and can be deleted, added, and copied/pasted. Each field in every USB packet can be separately specified: Sync, PID, Frame #, Addr, Endp, Data, CRC, etc. The length of the idle time between packets can be defined, and individual bits in any packet changed.

Once a satisfactory data pattern has been created, it can be downloaded to the flash memory in the generator box.