Datasheet

dsPIC30F3014/4013

DS70138G-page 150  2010 Microchip Technology Inc.

UUUUUUUU

— — — — — — — —

bit 23 bit 16

R/P R/P U U U R/P R/P R/P

FCKSM<1:0>

— — —FOS<2:0>

bit 15 bit 8

U U U R/P R/P R/P R/P R/P

— — —FPR<4:0>

bit 7 bit 0

Legend:

R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’

-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown

bit 23-16 Unimplemented: Read as ‘0’

bit 15-14 FCKSM<1:0>: Clock Switching and Monitor Selection Configuration bits

1x = Clock switching is disabled, Fail-Safe Clock Monitor is disabled

01 = Clock switching is enabled, Fail-Safe Clock Monitor is disabled

00 = Clock switching is enabled, Fail-Safe Clock Monitor is enabled

bit 13-11 Unimplemented: Read as ‘0’

bit 10-8 FOS<2:0>: Oscillator Group Selection on POR bits

111 = PLL oscillator; PLL source selected by FPR<4:0> bits (see Table 20-2)

011 = EXT: External Oscillator; OSC1/OSC2 pins; external oscillator configuration selected by

FPR<4:0> bits

010 = LPRC: Internal Low-Power RC

001 = FRC: Internal Fast RC

000 = LPOSC: Low-Power Crystal Oscillator; SOSCI/SOSCO pins

bit 7-5 Unimplemented: Read as ‘0’

bit 4-0 FPR<4:0>: Oscillator Selection within Primary Group bits (see Table 20-2)