dspic33fj16gs404t-i-pt Microchip Technology Inc., dspic33fj16gs404t-i-pt Datasheet - Page 141

• Manufacturer Part Number: dspic33fj16gs404t-i-pt
• Description: High-performance, 16-bit Digital Signal Controllers
• Manufacturer: Microchip Technology Inc.

REGISTER 8-1:
© 2009 Microchip Technology Inc.
bit 3
bit 2-1
bit 0
Note 1: Writes to this register require an unlock sequence. Refer to Section 42. “Oscillator (Part IV)” (DS70307)
2: Direct clock switches between any primary oscillator mode with PLL and FRCPLL mode are not permitted.
in the “dsPIC33F Family Reference Manual” (available from the Microchip website) for details.
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.
dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04
CF: Clock Fail Detect bit (read/clear by application)
1 = FSCM has detected clock failure
0 = FSCM has not detected clock failure
Unimplemented: Read as ‘0’
OSWEN: Oscillator Switch Enable bit
1 = Request oscillator switch to selection specified by NOSC<2:0> bits
0 = Oscillator switch is complete
OSCCON: OSCILLATOR CONTROL REGISTER
Preliminary
(1)
(CONTINUED)
DS70318D-page 139