3.5.7 SAM4CMS JTAG Debug Port

PL360MB board includes a JTAG interface port to provide debug level access to the system-on-chip. The JTAG port is a 20-pin, dual row, 0.1-inch male right angle connector (J13). This provides the required interface for in-circuit emulators such as the ARM^® Multi-ICE and Atmel SAM-ICE^™.

Important: Note that PL360-EK does not provide a SAM-ICE JTAG emulator probe to connect to the user’s host PC and the boards in order to download and debug the projects.

Please refer to the SAM4CMS datasheet for further description of the JTAG debug port.

Figure 3-34. JTAG/ICE Interface Schematic

CAUTION: Remember that the SAM4CMS16C JTAG connector is non-isolated. Please make use of proper isolation (i.e., USB isolator device) if debugging when the board is not galvanically isolated (metrology circuit measurements or using an PLCOUPxxx board which it is not isolated from mains).

Important: If you are using USB isolators to connect the devices to the computer, take into account the possible noise that these isolators could be adding to the PLC network. Some of these USB isolators use frequencies of the FCC band that could affect the communications. For example, you can use the UH401.