Patent ID: 8972809
Filing Date: 2015-03-03
Classification: G01R

Abstract:
1. An integrated circuit comprising: A. a power terminal and a ground terminal accessible to outside the integrated circuit; B. functional circuitry having functional input and output leads and having power and ground leads coupled to the power and ground terminals; C. test circuitry having test leads connected to the functional circuitry and having a dedicated device test output lead extending from the test circuitry, the dedicated device test output lead being free of the functional input and output leads; D. test messaging and control circuitry having an output lead and having an input lead connected to the dedicated device test output lead; E. modulation circuitry having an output coupled to the power terminal and an input connected to the output lead of the test messaging and control circuitry; and F. filter circuitry connected between the power terminal and the power lead of the functional circuitry.