【Abstract】 The on-chip in-circuit emulator (ICE) module is crucial to support the real-time simulation and debugging of DSP systems and speed up the system development process. Combining the development of a general-purpose digital signal processor MEDSP, this paper designs an on-chip ICE module for the MEDSP processor at a very low cost by extending the functions of some JTAG interface units and MEDSP internal units based on the international standard test JTAG interface. The simulation results show that the module can fully realize the in-circuit simulation of the MEDSP processor without affecting the system performance.
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