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Since WD_SETx signals are routed externally, WDT configuration can be changed by optional circuitry implemented on the carrier board. Different solutions can be implemented on the carrier board, depending on system requirements. The easiest circuit consists of additional stronger pull-up/down resistors connected to WD_SETx pins in order to overrule default configuration. As MAX6373 allows to change the configuration during operation, more complex solutions can be implemented as well.
Please note that on the [[BoraXEVBBORA_Xpress_SOM/BORA_Xpress_Evaluation_Kit|BORAXEVBBORA Xpress]] carrier evaluation board, by default WDT is disabled via S1, S2 and S3 dip switches (WD_SET2=0, WD_SET1=1, WD_SET0=1).
It is also worth mentioning that Zynq integrates a System Watchdog Timer (SWDT) that can optionally generates a reset pulse on PS_MIO15_500 pad if this is configured as SWDT reset. In case such a configuration is of interest, on request MAX6373 may not be populated. For more details about this option, please contact [mailto:sales@dave.eu Sales Department].
