The usb2Wiggler™ is a mid-cost interface used in the design, debug, and
programming of microprocessor based embedded systems. One side of the usb2Wiggler™
interfaces to the USB 1.1 or 2.0 port of a host IBM compatible PC and the other
side connects to an OCD (On-Chip Debug) port of the target system. This port may
be JTAG, E-JTAG, OnCE, COP, BDM or any of several other types of connections.
When connected to a USB 2.0 port on your PC, the usb2Wiggler™ will run up to
Hi-Speed USB rates (480Mb/s). As with all Macraigor interface devices, the
usb2Wiggler™ can simultaneously debug up to 255 devices on a single scan chain. Up
to 16 usb2Demons can be connect to a single host pc.

The usb2Wiggler™ is designed to be a major upgrade from the parallel port
Wiggler series of OCD connections and, for many targets, is also faster than a
Raven. It supports configurable JTAG/BDM clock rates up to 6 MHz, however, it
may be upgraded to run at the clock speeds of a usb2Demon™. It is compatible
with Widows and Linux hosts. Supported versions of Linux are Red Hat Core 2 -
Core 8 (up to 2.6.24) Linux 32 and Red Hat Enterprise 5,and Fedora Core 6-8
(2.6.18 - 2.6.24) Linux 64 systems.

Theory of Operation - The usb2Wiggler™ operates as a converter between the target
JTAG/BDM signals and host debugging commands. Power is supplied by the USB
interface so that no external supply is necessary. The buffers that interface to
the target OCD signals are powered by the target itself, allowing the usb2Wiggler™
to automatically match target voltages between 5.0 v and 2.2 v.

Physical - The usb2Wiggler™ is in a black plastic housing, approximately 4 x 2.5 x
0.75 inches. One side has a standard usb cable to connect to the host pc. The
other side has a 5.5 inch ribbon cable ending in the appropriate header for the
OCD target. It weighs approximately 8 ounces.

User Manual