36.7.2 10-pin JTAGICE3 Compatible Serial Wire Debug Interface
The JTAGICE3 debugger and programmer does not support the Cortex Debug Connector (10-pin) directly, hence a special pinout is needed to directly connect the SAM D20 to the JTAGICE3, alternatively one can use the JTAGICE3 squid cable and manually match the signals between the JTAGICE3 and SAM D20. The following figure describes how to connect a 10-pin header that support connecting the JTAGICE3 directly to the SAM D20 without the need for a squid cable.
To connect the JTAGICE3 programmer and debugger to the SAM D20, one can either use the JTAGICE3 squid cable, or use a 10-pin connector as shown in the figure below with details given in the next table to connect to the target using the JTAGICE3 50 mil cable directly.
| Header Signal Name | Description |
|---|---|
| SWDCLK | Serial wire clock pin |
| SWDIO | Serial wire bidirectional data pin |
| RESET | Target device reset pin, active low |
| VTG | Target voltage sense, should be connected to the device VDD |
| GND | Ground |