Datasheet

2009-2012 Microchip Technology Inc. DS70591E-page 193
dsPIC33FJ32GS406/606/608/610 and dsPIC33FJ64GS406/606/608/610
bit 3 CF: Clock Fail Detect bit (read/clear by application)
1 = FSCM has detected clock failure
0 = FSCM has not detected clock failure
bit 2-1 Unimplemented: Read as ‘0
bit 0 OSWEN: Oscillator Switch Enable bit
1 = Requests oscillator switch to selection specified by NOSC<2:0> bits
0 = Oscillator switch is complete
REGISTER 9-1: OSCCON: OSCILLATOR CONTROL REGISTER
(1)
(CONTINUED)
Note 1: Writes to this register require an unlock sequence. Refer to Section 42. “Oscillator (Part IV)” (DS70307)
in the “dsPIC33F/PIC24H Family Reference Manual” for details.
2: Direct clock switches between any primary oscillator mode with PLL and FRCPLL mode are not permitted.
This applies to clock switches in either direction. In these instances, the application must switch to FRC
mode as a transition clock source between the two PLL modes.