Datasheet

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17.3.29 Digital Watchdog Preload Register (RTIDWDPRLD)
This register sets the expiration time of the DWD. This register is shown in Figure 17-38 and described in
Table 17-28.
Figure 17-40. Digital Watchdog Preload Register (RTIDWDPRLD) [offset = 94h]
31 16
Reserved
R-0
15 12 11 0
Reserved DWDPRLD
R-0 R/WP-FFFh
LEGEND: R/W = Read/Write; R = Read only; WP = Write in privileged mode only; -n = value after reset
Table 17-30. Digital Watchdog Preload Register (RTIDWDPRLD) Field Descriptions
Bit Field Value Description
31-12 Reserved 0 Reads return 0 and writes have no effect.
11-0 DWDPRLD 0-FFFh Digital Watchdog Preload Value.
Read: The current preload value
Write: Set the preload value. The DWD preload register can be configured only when the DWD is
disabled. Therefore, the application can only configure the DWD preload register before it enables
the DWD down counter.
The expiration time of the DWD Down Counter can be determined with following equation:
texp = (DWDPRLD+1) x 2
13
/ RTICLK1
where: DWDPRLD = 0...4095
597
SPNU562–May 2014 Real-Time Interrupt (RTI) Module
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