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TMS320F280049: DCSM block JTAG permanently

Part Number: TMS320F280049

Hi All:

In my understand that user can using dcsm to block JTAG read secured memory. But MCU still can using wait in reset mode, or send reset signal on XRS to link MCU(to doing unlock procedure). Is there other way to block JTAG link in when  MCU in the wait-in-reset boot or XRS signal been triggered? When our product going to mass production stage ,we won't change program by JTAG . 

Andrew