DSPIC33EP64GS708 datasheet(115/484 Pages) MICROCHIP

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DS70005258C-page 115

dsPIC33EPXXXGS70X/80X FAMILY

REFOCON: REFERENCE OSCILLATOR CONTROL REGISTER

R/W-0

U-0

R/W-0

ROON

—

ROSSLP

ROSEL

RODIV3(1)

RODIV2(1)

RODIV1(1)

RODIV0(1)

bit 15

bit 8

U-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 15

ROON: Reference Oscillator Output Enable bit

1 = Reference oscillator output is enabled on the RPn pin(2)

0 = Reference oscillator output is disabled

bit 14

Unimplemented: Read as ‘0’

bit 13

ROSSLP: Reference Oscillator Run in Sleep bit

1 = Reference oscillator output continues to run in Sleep

0 = Reference oscillator output is disabled in Sleep

bit 12

ROSEL: Reference Oscillator Source Select bit

1 = Oscillator crystal is used as the reference clock

0 = System clock is used as the reference clock

bit 11-8

RODIV<3:0>: Reference Oscillator Divider bits(1)

1111 = Reference clock divided by 32,768

1110 = Reference clock divided by 16,384

1101 = Reference clock divided by 8,192

1100 = Reference clock divided by 4,096

1011 = Reference clock divided by 2,048

1010 = Reference clock divided by 1,024

1001 = Reference clock divided by 512

1000 = Reference clock divided by 256

0111 = Reference clock divided by 128

0110 = Reference clock divided by 64

0101 = Reference clock divided by 32

0100 = Reference clock divided by 16

0011 = Reference clock divided by 8

0010 = Reference clock divided by 4

0001 = Reference clock divided by 2

0000 = Reference clock

bit 7-0

Unimplemented: Read as ‘0’

Note 1:

The reference oscillator output must be disabled (ROON = 0) before writing to these bits.

This pin is remappable. See Section 11.6 “Peripheral Pin Select (PPS)” for more information.

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