2.5 Default Jumper Settings

Table 2-5. SAM9X75D2G Default Jumper Settings
Header Default Setting Function
J3 Closed VDDBU current measurement
J8 2-3 (always on) Enable extra 3.3V and 2.5V power supply:
  • 1-2 Enable with VDD_3V3
  • 2-3 Enable with 5V_MAIN
J9 Closed NAND boot:
  • Open: disabled
  • Closed: enabled
J10 Closed QSPI CS:
  • Open: disabled
  • Closed: enabled
J11 2-3 (CS SODIMM) SODIMM/RPi CS:
  • 1-2: RPi SPI CS selected
  • 2-3: SODIMM SPI CS selected
J12 Closed 25 MHz (Gigabit Ethernet J17):
  • Open: disabled
  • Closed: enabled
J13 Closed 32.768 kHz (M.2 KEY E connector J20)
  • Open: disabled
  • Closed: enabled
J24 1-2 (SDIO) M.2 KEY E host interface:
  • 1-2: SDIO interface
  • 2-3: SPI interface
J38 and J39 Both 2-3 I2C PAC1934:
  • Both 1-2 connected to USB J34
  • Both 2-3 connected to SAM9X75 I2C (PC0 and PC1)
  • Both open: disconnected
  • Other settings: not allowed
Figure 2-2. SAM9X75-Curiosity Default Jumper Settings