ULINKplus User's GuideIntroduction Hardware Description Debug and Trace JTAG/SWD Interface Connect to Target Debug Debug Settings Application Debug Pack Settings Trace Clock Measurement Flash Programming Configure Flash Download Flash Download User Flash Algorithms Power Measurement Test Automation µVision Windows Troubleshooting Appendix
The ULINKplus supports an isolated JTAG/SWD interface using a low-cost 10-pin (0.05") connector.
The target interface schematic shows the JTAG and Serial Wire interface circuits of ULINKplus. All pins are 1kV isolated and support hot-plugging while the target is running.
Use this schematic to help with board design, and for analyzing and debugging your target hardware.
The 10-pin, 0.05" JTAG/SWD connector offers ITM and DWT trace information. In SWD mode, two pins are used for debugging: one bi-directional pin (SWDIO) transfers the information and the second pin (SWDCLK) clocks the data. A third pin (SWO) delivers the trace data at minimum system cost. The Serial Wire and JTAG pins are shared.
JTAG and Serial Wire Signals
Because the 10-pin JTAG/SWD connector supports both JTAG and Serial Wire signals, you can configure the debugger for either JTAG or Serial Wire mode to suit your Cortex device.
Serial Wire Signals
The Serial Wire mode differs to JTAG debugging, because only two pins are used for the communication. A third pin can be used optionally to trace data. JTAG pins and SW pins are shared.
of your data.