Datasheet

272
32142D–06/2013
ATUC64/128/256L3/4U
14.6.6 Power and Clocks Status Register
Name:
PCLKSR
Access Type: Read-only
Offset: 0x0014
Reset Value: 0x00000000
• BRIFAVALID: Backup Register Interface Valid
0: The values in the backup registers are not valid.
1: The values in the backup registers are valid.
• PLLL0LOCKLOST: PLL0 lock lost value
0: PLL0 has not lost it’s lock or has never been enabled.
1: PLL0 has lost it’s lock, either by disabling the PLL0 or due to faulty operation.
• PLL0LOCK: PLL0 Locked on Accurate value
0: PLL0 is unlocked on accurate value.
1: PLL0 is locked on accurate value, and is ready to be selected as clock source with an accurate output clock.
• BRIFARDY: Backup Register Interface Ready
0: The backup register interface is busy updating the backup registers. Writes to BRn will be discarded.
1: The backup register interface is ready to accept new writes to the backup registers.
• DFLL0RCS: DFLL0 Reference Clock Stopped
0: The DFLL reference clock is running, or has never been enabled.
1: The DFLL reference clock has stopped or is too slow.
• DFLL0RDY: DFLL0 Synchronization Ready
0: Read or write to DFLL registers is invalid
1: Read or write to DFLL registers is valid
• DFLL0LOCKLOSTA: DFLL0 Lock Lost on Accurate Value
0: DFLL has not lost its Accurate lock or has never been enabled.
1: DFLL has lost its Accurate lock, either by disabling the DFLL or due to faulty operation.
• DFLL0LOCKLOSTF: DFLL0 Lock Lost on Fine Value
0: DFLL has not lost its Fine lock or has never been enabled.
1: DFLL has lost its Fine lock, either by disabling the DFLL or due to faulty operation.
31 30 29 28 27 26 25 24
-BRIFAVALID------
23 22 21 20 19 18 17 16
-----
PLLLOCKLO
ST0
PLLLOCK0 BRIFARDY
15 14 13 12 11 10 9 8
DFLL0RCS DFLL0RDY
DFLL0LOCK
LOSTA
DFLL0LOCK
LOSTF
DFLL0LOCK
LOSTC
DFLL0LOCK
A
DFLL0LOCK
F
DFLL0LOCK
C
76543210
BODDET SM33DET VREGOK - - - OSC0RDY OSC32RDY