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The Joint Test Action Group (JTAG) protocol is a primary means of communicating with a microcontroller (MCU) during product development, emulation, and application debug. All of Texas Instruments (TI) C2000™ devices support JTAG emulation and the C2000 evaluation products, such as controlCARDs and LaunchPads, incorporate on-board JTAG Emulation. The purpose of this application report is to provide a brief overview of JTAG implementation and explain the steps used to resolve common JTAG connectivity errors when using Code Composer Studio&tradde; software.