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Error 1170 debugging pru

Hi , i have a jtag blackhawkUSB560 v2 system tracer and a beagleboard black. I'm trying to do debug on pru. When i try to connect-target i have the following error code:

CortxA8: Error connecting to the target: (Error -1170 @ 0x0) Unable to access the DAP. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 9.11.0.00128)

All of the connection properties are setting to default.

thank's for all.