Patent ID: 6628141
Filing Date: 2003-09-30
Classification: G01R

Abstract:
An integrated circuit, comprising:at least two cooperating circuit sections including a first circuit section and a second circuit section, said circuit sections having input terminals and output terminals; an interface containing at least one scan register chain connecting said first circuit section to said second circuit section; and input/output terminals connected to said interface, said scan register chain receiving data selectively from said input/output terminals and said output terminals of one of said circuit sections, the data being output selectively from said scan register chain to said input terminals of one of said circuit sections and to said input/output terminals, said scan register chain receiving the data output from said output terminals of one of said circuit sections and then outputting the data via the scan register chain to said input/output terminals, and, the data fed to and stored in said scan register chain from outside the integrated circuit being output to said input terminals of one of said circuit sections.