公开(公告)号：WO2022039999A1

公开(公告)日：2022-02-24

申请号：PCT/US2021/045644

申请日：2021-08-12

Applicant: CISCO TECHNOLOGY, INC.

Inventor： SEETHARAMAN, Venkatasubramanian ,  FAN, Chuanyun ,  ZHANG, Fanchen ,  TU, Jing ,  LEE, Abby, Huggins ,  KARABINAS, Thomas

IPC: G01R31/3185

Abstract: A method includes disconnecting a data bus connecting a test access port (TAP) controller of an integrated circuit (IC) chip to a plurality of test data registers deployed on the chip, simultaneously supplying test data to multiple test data registers among the plurality of test data registers, and storing test response data, received from the plurality of test data registers and responsive to the test data, in storage registers deployed on the chip.