SAMA5D3x datasheet lists SYSC_WPMR, not found in datasheet

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We are having problems with the RTC_CR register (and others) being trashed during a hard kill (input power to regulators shut off, power-supplies decay, reset goes active when the 3.3V supply reaches 3.08V).

In the SAMA5D3 Datasheet Rev. 11121E (02-Feb-16), the sentence was added for several of the RTC registers (see Table 60-2, page 1867, Issue Date 03-Feb-15): 

“This register can only be written if the WPEN bit is cleared in
the System Controller Write Protection Mode Register (SYSC_WPMR)

However a search of the datasheet, of Atmel.com, etc. turns up no definition for SYSC_WPMR.  Inspection of Section 7, "System Controller" shows no register definitions.  Anyone know where this might be defined?

Thanks in advance!
 

Scott Willis

Last Edited: Tue. Nov 22, 2016 - 03:27 AM
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We are having the same problem not finding the SYSC_WPMR register described in the SAMS70 and SAME70 datasheets.  Are there any resolutions on this?  

Walt