2.7 Debug element

The Debug element provides the following features and interfaces:

  • JTAG and Serial Wire Debug (SWD) supported.
  • Single Debug Access Port (DAP) shared between both processors and other system level debug logic.
  • Debug certificate access filter.
  • Combining all trace sources within the system to a single shared ATB trace output to support a single TPIU trace output.
  • CTM and CTI.
  • Timestamp distribution from expansion logic to the debug logic of both processors.
  • Granular Power Requester to allow the debugger to selectively request parts of the SSE-200 to turn on.

The SWJ - DP is a combined JTAG-DP and SW-DP that enables you to connect either an SWD or JTAG probe to a target. It is a standard CoreSight™ debug port.

To make efficient use of package pins, the JTAG pins use an auto-detect mechanism that switches between JTAG-DP and SW-DP depending on which probe is connected.

Note:

An example of debug integration beyond the SSE-200 Subsystem level is provided with the product deliverables.

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