3.4.12.2 JTAG Debug Port

A 20-pin JTAG header (J64) is provided on the SAM9X75 Curiosity Pro board to facilitate software development and debugging using various JTAG emulators. The interface signals have a voltage level of 3.3V.

Figure 3-39. JTAG Debug Port
Table 3-20. JTAG Connector Pin Assignment
SignalPin NoPin NoSignal
VDD_3V321VDD_3V3
GND43JTAG0_0.JTAG_NRST
GND65JTAG0_0.JTAG_TCK
GND87JTAG0_0.JTAG_TDI
GND109JTAG0_0.JTAG_TMS
GND1211JTAG0_0.JTAG_RTCK
GND1413JJTAG0_0.JTAG_TDO
GND1615nRST0_0.nRST
GND1817JTAG0_0.JTAG_NRST
GND2019JTAG0_0.JTAG_TCK