DSPIC30F2011AT-30ESLASHS datasheet(152/238 Pages) MICROCHIP

152 / 238 page

dsPIC30F6011A/6012A/6013A/6014A

DS70143C-page 150

Preliminary

OSCCON: OSCILLATOR CONTROL REGISTER

U-0

R-y

U-0

R/W-y

—COSC<2:0>

—NOSC<2:0>

bit 15

bit 8

R/W-0

R-0

U-0

R/W-0

U-0

R/W-0

POST<1:0>

LOCK

—CF

—

LPOSCEN

OSWEN

bit 7

bit 0

Legend:

y = Values dependent on FOSC

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 15

Unimplemented: Read as ‘0’

bit 14-12

COSC<2:0>: Current Oscillator Group Selection bits (read-only)

111

= PLL Oscillator; PLL source selected by FPR<4:0> bits

011

= 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

= LP crystal oscillator; SOSCI/SOSCO pins

Set to FOS<2:0> values on POR or BOR.

Loaded with NOSC<2:0> at the completion of a successful clock switch.

Set to FRC value when FSCM detects a failure and switches clock to FRC.

bit 11

Unimplemented: Read as ‘0’

bit 10-8

NOSC<2:0>: New Oscillator Group Selection bits

111

= PLL Oscillator; PLL source selected by FPR<4:0> bits

011

= 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

= LP crystal oscillator; SOSCI/SOSCO pins

Set to FOS<2:0> values on POR or BOR.

bit 7-6

POST<1:0>: Oscillator Postscaler Selection bits

= Oscillator postscaler divides clock by 64

= Oscillator postscaler divides clock by 16

= Oscillator postscaler divides clock by 4

= Oscillator postscaler does not alter clock

bit 5

LOCK: PLL Lock status bit (Read Only)

= Indicates that PLL is in lock

= Indicates that PLL is out of lock (or disabled)

bit 4

Unimplemented: Read as ‘0’

bit 3

CF: Clock Fail Detect bit (read/clearable by application)

= FSCM has detected clock failure

= FSCM has NOT detected clock failure

bit 2

Unimplemented: Read as ‘0’

bit 1

LPOSCEN: 32 KHz Secondary (LP) Oscillator Enable

= Secondary Oscillator is enabled

= Secondary Oscillator is disabled

bit 0

OSWEN: Oscillator Switch Enable bit

= Request Oscillator switch to selection specified by NOSC<2:0> bits

= Oscillator switch is complete

DSPIC30F2011AT-30E/S Datasheet(PDF) 152 Page - Microchip Technology

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