Datasheet

PIC24F16KA102 FAMILY

DS39927C-page 94  2008-2011 Microchip Technology Inc.

bit 7 CLKLOCK: Clock Selection Lock Enabled bit

If FSCM is enabled (FCKSM1 = 1):

1 = Clock and PLL selections are locked

0 = Clock and PLL selections are not locked and may be modified by setting the OSWEN bit

If FSCM is disabled (FCKSM1 =

0):

Clock and PLL selections are never locked and may be modified by setting the OSWEN bit.

bit 6 Unimplemented: Read as ‘0’

bit 5 LOCK: PLL Lock Status bit

(2)

1 = PLL module is in lock or PLL module start-up timer is satisfied

0 = PLL module is out of lock, PLL start-up timer is running or PLL is disabled

bit 4 Unimplemented: Read as ‘0’

bit 3 CF: Clock Fail Detect bit

1 = FSCM has detected a clock failure

0 = No clock failure has been detected

bit 2 Unimplemented: Read as ‘0’

bit 1 SOSCEN: 32 kHz Secondary Oscillator (SOSC) Enable bit

1 = Enable secondary oscillator

0 = Disable secondary oscillator

bit 0 OSWEN: Oscillator Switch Enable bit

1 = Initiate an oscillator switch to clock source specified by NOSC<2:0> bits

0 = Oscillator switch is complete

Note 1: Reset values for these bits are determined by the FNOSC Configuration bits.

2: Also resets to ‘0’ during any valid clock switch or whenever a non-PLL Clock mode is selected.