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cPCI-MXS64 Technical Reference Manual
3-6
The digital watchdog duration can be controlled in the following way.
WDD[2..0]
NMI(T)
RESET(T)
000
16T NMI(T)+8T
001
64T NMI(T)+8T
010
256T NMI(T)+8T
011
1024T NMI(T)+8T
100
4096T NMI(T)+8T
101
16384T NMI(T)+8T
110
65536T NMI(T)+8T
111
262144T NMI(T)+8T
Time-out selection with T = 1.08ms (TBC)
3.1.10 NMI Control
CPLD
Address
D7
D6
D5
D4
D3
D2
D1
D0
READ
n97*
BATFEN
BATFLT
NU NU NU NU
WDNMIEN
WDNMI
WRITE
n97*
BATFEN
NU NU NU NU NU
WDNMIEN
NU
Power-up Default
0
0
WDNMI
: When high, signal NMI from watchdog time-out.
WDNMIEN : Enable NMI generation from digital watchdog
BATFLT
: When high, signal NMI from local RTC battery monitor
BATFEN
: Enable NMI generation for bat fault.
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