ADLINK PMC-8246 - Manual (Page 25)

Programming Information 13
PMC-8246
WDT Reload
When WDT is reload, the circuit will load the WDT value from
either WDT_VP[1:0] or WDV_VS[1:0] dependent on the control
modes setting.
WDT Time Out Value Seting
3.2 Bypass Control Priority
The relay array is controlled by reset, WDT time out, bypass con-
trol mode bits, and external settings from the header. Please refer
to the following block diagram.
WDT_RL Functions
0 -> 1 -> 0 Reload WDT to avoid timeout
WDT_VP1 WDT_VP0 WDT time out value
0 0 1 second
Power On Default
0 1 2 seconds
1 0 4 seconds
1 1 8 seconds
WDT
Time Out
Bypass
Control
Logic
MODE[0:1]
Control
Relay
BYPASS
NORMAL
PONSTS
PCI_RESET
SWX1