Zynq UltraScale+ Devices Register Reference > Access Types Legend
Access Types | 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 |
rs | w: no effect, r: sets all bits |
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 |
w0c | w: 1/0 no effect on/clears matching bit, r: no effect |
w0crs | w: 1/0 no effect on/clears matching bit, r: sets all bits |
w0s | w: 1/0 no effect on/sets matching bit, r: no effect |
w0src | w: 1/0 no effect on/sets matching bit, r: clears all bits |
w0t | w: 1/0 no effect on/toggles matching bit, r: no effect |
w1 | w: first one after ~hard~ reset is as-is, other w have no effects, r: no effect |
w1crs | w: 1/0 clears/no effect on matching bit, r: sets all bits |
w1src | w: 1/0 sets/no effect on matching bit, r: clears all bits |
w1t | w: 1/0 toggles/no effect on matching bit, r: no effect |
waz | Write as zero |
wcrs | w: clears all bits, r: sets all bits |
wo | Write-only |
wo1 | w: first one after ~hard~ reset is as-is, other w have no effects, r: error |
woc | w: clears all bits, r: error |
wos | w: sets all bits, r: error |
wrc | w: as-is, r: clears all bits |
wrs | w: as-is, r: sets all bits |
ws | w: sets all bits, r: no effect |
wsrc | w: sets all bits, r: clears all bits |
wtc | Readable, write a 1 to clear |
z | Access (read or write) as zero |