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Zynq-7000 AP SoC Technical Reference Manual www.xilinx.com 783
UG585 (v1.11) September 27, 2016
Appendix B: Register Details
B.2 Acronyms
The following acronyms are used for many of the registers.
Access Type Description
clronrd Readable, clears value on read
clronwr Readable, clears value on write
nsnsro During non-secure access, if thread is non-secure, it is read only
nsnsrw During non-secure access, if thread is non-secure, it is read write
nsnswo During non-secure access, if thread is non-secure, it is write only
nssraz During non-secure access, if thread is secure, it is read as zero
raz Read as zero
ro Read-only
rud Read undefined
rw Normal read/write
rwso Read/write, set only
sro During secure access, it is read only
srw During secure access, it is read write
swo During secure access, it is write only
waz Write as zero
wo Write-only
wtc Readable, write a one to clear
z Access (read or write) as zero