Development Board for phyCORE-MPC555
20
PHYTEC Meßtechnik GmbH 2000 L-525e_2
3.4
Supply Voltages JP10 to JP12, J1
This jumpers can be used to open the power paths to loop a current
meter.
Attention:
Do not supply the system if any of these jumpers are open.
Jumper
default Description
JP10
closed
X
JP10 connects the +5 V
EXT
supply voltage to
the I/O-Connector VG1. LED D8 is connected
to this voltage.
J1
closed
+5 V
EXT
is controlled by the target signal
/PWRON. /PWRON is always active if the
target is not in power-down mode. If the target
is in power-down mode, /PWRON goes
inactive and switches off the +5 V
EXT
voltage.
D8 is then turned off.
open
X
+5 V
EXT
is constantly attached to the I/O-
Connector VG1 (i.g. FET T1 is by-passed)
JP11
closed
X
JP11 connects the +5 V supply voltage to the
target module. LED D9 is connected to this
voltage and illuminates unaffected by the
target power-down mode.
JP12
closed
X
JP12 connects the +3V3 supply voltage to the
target module. LED D10 is connected to this
voltage and illuminates unaffected by the
target power-down mode.
