9
3.3 Jumper setting
ROM-7420 module board
SW2
Boot Rom Selection
Part Number
1600000202
Footprint
SW_2x2P_50_161X315
Description
DIP SW CHS-02TB(20) SMD 4P SPST P=1.27mm W=5.4mm
Pin
Pin Name
1
+3V
2
GND
This switch is designed for selecting boot up method. With Switch 1 on and Switch 2 off, the board boots
from on board eMMC; with Switch 1 off and Switch 2 on, it boots from SD/MMC card.
Boot Rom selection
SW2
1
2
SPI NOR
ON
OFF
SD Slot
OFF
ON
