VIPER
Detailed hardware description
Watchdog timer
The PXA255 contains an internal watchdog timer, which can be used to protect against
erroneous software. Timeout periods can be adjusted from 271ns to 19 minutes 25
seconds. When a timeout occurs the board is reset. On reset the watchdog timer is
disabled until enabled again by software.
For further details see the Arcom operating system Technical Manual and the Intel
PXA255 developer’s manual on the Development Kit CD.
© 2004 Arcom Issue H
22