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TMS320F28378S: Error connecting to the target: (Error -1156 @ 0x0) Device may be operating in low-power mode after programming CSM password

JHi
Expert 2710 points
Part Number: TMS320F28378S
Other Parts Discussed in Thread: UNIFLASH

I'm testing the DCSM and programmed CSM password. Afterwards I can't connect the controller anymore. When I try to unlock the controller (with CCS or Uniflash) I always get:

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[ERROR] C28xx_CPU1: Error connecting to the target: (Error -1156 @ 0x0) Device may be operating in low-power mode. Do you want to bring it out of this mode? Choose 'Yes' to force the device to wake up and retry the operation. Choose 'No' to retry the operation without waking the device. (Emulation package 9.9.0.00040)
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

CCS JTAG connection test is successful.