Corelis has developed a wide range of high-performance boundary-scan controllers that are compatible with buses such as USB 2.0, PCI, PCI Express, and Ethernet. Many of Corelis’ boundary-scan controllers operate up to 100 MHz sustained TCK frequency. This wide choice of platforms allows greater flexibility to meet specific price and performance criteria for a given application while maintaining complete software transportability across all hardware platforms.

Controller Selection Matrix

The table below lists both current and legacy JTAG controllers offered by Corelis.   Click on the controller model below to find out more about each of our JTAG Boundary-Scan Controllers.  A brief description of each controller follows. For complete information on the controllers, please refer to the detailed datasheets.  For additional feature sets, view the Optional Accessory Selection Matrix tab.

For High Volume Controllers click here

Corelis JTAG Controller Features

Programmable Clock

The system-wide TCK rate for all TAP ports is programmable under software control. A wide range of TCK frequencies can be achieved by using the on-board Phase-Locked-Loop (PLL) generation circuitry. Depending on the controller, users are given the ability to select the desired TCK rate from a range of values up to 100 MHz at resolution increments of less than 2%.

Adjustable Low Voltage Outputs

The voltage level of the parallel I/O, the local TAP port, and each pod TAP is software programmable and can be set to any voltage between 1.25V and 3.3V in increments of 0.05V. The ports of the ScanTAP-4 and ScanTAP-8 pods can also be slew rate (fast/slow) adjusted.

Scan Input Signal Delay Compensation

The controller and its remote pod include analog-to-digital converters, which can measure connected power voltages from the target. Such voltages from two distinct target levels can be measured and compared against user-defined limits. This feature can provide detailed signal voltage checks at any stage of a test plan.

Target Voltage Detection System

The controller and its remote pod include analog-to-digital converters, which can measure connected power voltages from the target. Such voltages from two distinct target levels can be measured and compared against user-defined limits. This feature can provide detailed signal voltage checks at any stage of a test plan.

Automatic Detection of UUT Power Shorts

With the target powered down, a well-regulated drive current with current limit can be momentarily applied to the target power bus. By measuring this current, the approximate load resistance can be calculated. This provides for the automatic detection of target power shorts, prior to applying power to the target unit.

Get Started with Corelis


By submitting this form, you are consenting to receive marketing emails from: Corelis Inc., marketing@corelis.com. You can revoke your consent to receive emails at any time by using the SafeUnsubscribe® link, found at the bottom of every email. Emails are serviced by Constant Contact

Looking for help? Get in touch with us