Method and apparatus for forming a logical combination of signals from diagnostic nodes in an IC chip for passive observation at a dedicated diagnostic pin

摘要

Apparatus and method for programmably providing information on a dedicated output pin of an integrated circuit, which information is diagnostic about a plurality of nodes inside of said integrated circuit by connecting said plurality of nodes and a programmable set of binary gate signals to a combinatorial logic circuit and controlling the selection of said nodes being input to said logic circuit so that said combinatorial logic circuit provides a real time diagnostic signal to said dedicated output pin.