3.23 Watchdog (WATCH)
3.23.1 Address
Register Offset
WATCH 01Fh
3.23.2 Function
The WATCH register selects the watchdog timer value used during the reconfiguration
processes. When RCFG[WDEN] enables the watchdog timer, a count down timer begins.
If the DUT software does not disable or restart the watchdog timer within the specified
limits, the system restarts.
Note that the watchdog timer is not dependent upon a reconfiguration sequence being
active. While it is typically enabled along with RCFG[GO] as part of a reconfiguration
sequence; in fact, it is independent and can be enabled for any reason.
3.23.3 Diagram
Bits
7 6 5 4 3 2 1 0
R
WATCH
W
CRST 00011111
3.23.4 Fields
Field Function
7-0
WATCH
Watchdog timer value, as determined by the formula:
time-out = [ WATCH * (2.0sec) ] + 2.0sec
Examples:
11111111= 8 min
00111111= 2 min
00001111= 32 sec
Watchdog (WATCH)
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 0, 09/2018
88 NXP Semiconductors
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