Patent ID: 8543875
Filing Date: 2013-09-24
Classification: G01R

Abstract:
1. A process of testing target systems connected in a star configuration, each target system having a test access port controller, comprising: A. moving all of the TAP controllers from a RunTest/Idle state, through a Capture-DR state and an Exit B. selecting a first TAP controller with first encoded bits on a TDI input to each target system; C. moving only the first TAP controller through an Exit D. de-selecting the first TAP controller and selecting a second TAP controller with second encoded bits on the TDI input to each target system; E. moving only the second TAP controller through an Exit F. de-selecting the second TAP controller and selecting a third TAP controller with third encoded bits on the TDI input to each target system; G. moving only the third TAP controller through an Exit H. selecting all of the TAP controllers with encoded bits on the TDI input to each target system and moving all of the TAP controllers from the Pause-DR state to an Update-DR state.