OLIMEX LPC2478-STK, User Manual, Page: 12 / 20

ETM_E
If you put this jumper, you enable the MICTOR Trace connector.
Default state is open.
BDS_E
Boundary scan enable.
Default state is open.
C/SC
This jumper controls the USB device interface.
If 1-2 are shorted, the USB is always enabled.
If 2-3 are shorted, the USB Enable is controlled by the MCU
LPC2478 signal USB1_CONNECT.
Default state is 2-3 shorted.
PD/CTRL
This jumper controls the PHY signal of the Ethernet controller.
If there is no jumper, the PHY is always enabled.
If 1-2 are shorted, the PHY is disabled
If 2-3 are shorted, the PHY is controlled by the LPC2478 signal
PHY_PD.
Default state is no jumper (opened).
EXT/JLINK
This jumper controls the JLINK +5V power line (pin19) of the JTAG
and the +5VDC power supply of the board.
If 1-2 are shorted, the JLINK +5V power line (pin19) from the JTAG
interface supplies the board with +5VDC.
If 2-3 are shorted, the board is supplied with +5VDC from the
+5VDC voltage regulator.
Default state is 2-3 shorted.
EXT/BAT
This jumper controls the VBAT signal of the LPC2478.
If 1-2 are shorted, the VBAT pin is supplied by an external
battery.
If 2-3 are shorted, the VBAT pin is supplied by the common
+3.3VDC power supply for the board.
Default state is 2-3 shorted.
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