INTEGRATED CIRCUIT WITH JTAG PORT, TAP LINKING MODULE, AND OFF-CHIP TAP INTERFACE PORT

摘要

An IC includes an IEEE 1149.1 standard test access port (TAP) interface and an additional Off-Chip TAP interface. The Off-Chip TAP interface connects to the TAP of another IC. The Off Chip TAP interface can be selected by a TAP Linking Module on the IC.