Phytec phyCORE-LPC2292/94, Hardware Manual

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phyCORE-LPC2292/94
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PHYTEC Messtechnik GmbH 2006 L-658e_5
3.23 J621 WDI Signal Source
Jumper J621 configures the source of the signal connected to the WDI
input on the external Watchdog timer (WDT). Jumper J621 connects
microcontroller port P021 to the WDI input signal which allows
software controlled WDT activation.
The following configurations are possible:
WDI Signal Source J621
WDI signal on WDT MAX6301 is not
controlled by the microcontroller, if the WDT
is used then the WDI signal needs to be
controlled via Molex pin X700D8
open*
Microcontroller port P021 controls the WDI
input signal. Additional peripheral components
can be controlled by the WDI/P021 signal at
Molex pin X700D8
closed
* = Default setting
Table 32: J621 WDI Signal Source
3.24 J622 RESET Signal Source
Jumper J622 configures the source of the high active RESET signal.
Closing Jumper J622 (requires Q601 to not be populated) connects the
output of U601 (TLC7701) with the RESET signal which allows
push/pull generation of the high active RESET signal.