Profile: Firecron Ltd specializes in the design and development of IEEE1149.1 infrastucture products. We offer a wide range of IEEE1149.1 compliant gateways, controllers and sequencers. The gateway devices offer unparalleled features, which enable the deployment of good design for test within any card or system. They allow a wide range of function to be controlled, via software. The JTS family of gateway devices are the premier range of gateway devices, these devices form the cornerstone of any D.F.T test strategy. The gateway allows the designer to implement a comprehensive and well imlemented design stratagy with only one access point for everything from interconnect testing to processor debugging. The devices themselves range form 3 to 15 LSP's or daughter chains, which under software control can be oriented in any permutation required for that test. The key is that all the devices are based on the IEEE1149.1 standard and are fully supported within all the ATPG vendors tool sets. The clock I.P core (IP-102) provides a method of using boundary scan to detect and measure the period of signal transitions on a PCB, primarily targeted at clock but can also be used to detect data pattern as well as signal transitions. The solution involves programming the IP-102 core into a programmable logic device where the signal to be tested is connected.