FOR IMMEDIATE RELEASE

Contact:

Wendy Harrison
Flynn Systems Corp.
74 Northeastern Blvd
Nashua, NH 03062 USA
603-598-4444
Sales@flynn.com

onTAP® Serializer Makes Boundary Scan Testing More Flexible

Nashua, NH - April 30, 2007 -- Flynn Systems announces the availability of its new onTAP Serializer accessory, adding flexibility to boundary scan testing of PC boards with devices of varying voltages..

“As technology drives core voltages lower and JTAG devices with different voltages in the same circuit become more and more common, the Serializer provides a solution to JTAG users,” says Hank Flynn, CEO.

Many customers have several JTAG devices in an application circuit.  Some of these devices operate at different voltages.  The Serializer allows connectivity from a single host JTAG port and provides up to four independent output ports with each one capable of operating at any voltage from +1.5VDC up to +5VDC.

The Serializer eliminates the need for the user to provide level translators and routing logic in his or her application that is typically used only in bringing up the board and not used during normal circuit operation saving cost which could be substantial in high volume runs. 

The Serializer also allows for daisy chaining of multiple Serializers providing as many output channels as required.  The Serializer is also useful when connecting to multiple target application boards and as a single channel level translator.

Operational description….

The Serializer takes the JTAG source channel from any host JTAG port (must be capable of operation at +3.3V) and routes it through level translators to provide up to four, daisy chained, output channels. 

Each output channel is designed to operate from any voltage from +1.5VDC up to +5VDC.  Serializing is performed by routing TDO of the first channel to TDI of the next through the use of jumpers.  Each channel has a jumper that, when left open (shunt not installed), passes the data to the next channel. 

Installing the jumper at any of the channels routes TDO back to the host TDI and thereby selects that channel as the end of the chain.  In this way you can choose to use 1, 2, 3 or 4 channels or select the daisy chain output port to the next Serializer.  One channel can be useful when your JTAG port only operates at a fixed voltage.  The Serializer then provides the level translators necessary to drive lower voltages without signal degredation.

The unit operates from a +5VDC wall adapter.  Two DC Jacks allow the use of a single wall adapter to power multiple Serializers.  A jumper cord (available as an accessory) can be used to jumper power from Serializer to Serializer without the need for multiple wall adaptors that clutter up your power strip.  LED indicators for status include a power indicator for the unit and two LEDs per channel that indicate channel attached and activity.

(onTAP is a registered trademark of Flynn Systems Corp.)

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