Design of Programmable JTAG Controller In FPGA

摘要

JTAG is one of the most powerful structured DFT technique used in VLSI industry that provides testing and debugging at chip, board level and system level. Besides testing, it can be utilized for some other non-testing purposes such as providing access to the internal components of the device. JTAG controller becomes the integral part of every VLSI IC chip. Here a programmable JTAG controller is proposed and implemented in FPGA. This scheme is employed in all the benchmark circuits of ISCAS_89 design and their performances were evaluated. All the designs are coded in verilog and simulated in Model sim DE 6.5e and synthesized in Xilinx Virtex-5 FPGA technology.