CPU_45B-V1
CPU Board XMC4500 SDRAM
Hardware Description
Board User's Manual
12
Revision 1.0, 2013-02-20
2.2
Reset
A reset signal connected to the low-active PORST# pin of the target CPU (U300) can be issued by
an on-board Reset Button (SW400, RESET)
an on-board debug device (U500)
an external debugger connected to either Cortex Debug connector X400 or X401
The RESET signal is routed to all satellite connectors. The reset circuit includes a red LED (V407) to indicate
the reset status: The Reset
LED (V407) will be “ON” during active reset state and will be “OFF” if reset is not
active.
Be aware that PORST# is a bidirectional reset pin of the XMC4000 family which can also be pulled low by the
XMC4000 device itself.
Figure 5
Reset Circuit
Figure 6
Reset LED and Reset Button
Reset
Button
Reset
LED
RST.emf