Datasheet

224
32142D–06/2013
ATUC64/128/256L3/4U
13.7.4 PBx Clock Select
Name:
PBxSEL
Access Type: Read/Write
Offset: 0x00C-0x010
Reset Value: 0x00000000
• PBDIV, PBSEL: PBx Division and Clock Select
PBDIV = 0: PBx clock equals main clock.
PBDIV = 1: PBx clock equals main clock divided by 2
(PBSEL+1)
.
Note that if PBDIV is written to 0, PBSEL should also be written to 0 to ensure correct operation.
Also note that writing this register clears SR.CKRDY. The register must not be re-written until SR.CKRDY is set.
Note that this register is protected by a lock. To write to this register the UNLOCK register has to be written first. Please
refer to the UNLOCK register description for details.
31 30 29 28 27 26 25 24
--------
23 22 21 20 19 18 17 16
--------
15 14 13 12 11 10 9 8
--------
76543210
PBDIV - - - - PBSEL