Datasheet

 2012 Microchip Technology Inc. DS30575A-page 61

PIC18F97J94 FAMILY

Note 1: The ACTSRC bit should only be changed when ACTEN = 0.

R/W-0 U-0 R/W-0 R/W-0 R-0 R/W-0 R-0 R/W-0

ACTEN

— ACTSIDL ACTSRC

(1)

ACTLOCK ACTLOCK-

POL

ACTORS ACTOR-

SPOL

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 7 ACTEN: Active Clock Tuning Selection bit

1 = ACT module is enabled, updates to OSCTUNE are exclusive to the ACT module

0 = ACT module is disabled

bit 6 Unimplemented: Reads as ‘0’

bit 5 ACTSIDL: Active Clock Tuning Stop in Idle bit

1 = Active clock tuning stops during Idle mode

0 = Active clock tuning continues during Idle mode

bit 4 ACTSRC: Active Clock Tuning Source Selection bit

1 = The FRC oscillator is tuned to approximately match the USB host clock tolerance

0 = The FRC oscillator is tuned to approximately match the 32.768 kHz SOSC tolerance

bit 3 ACTLOCK: Active Clock Tuning Lock Status bit

1 = Locked; internal oscillator is within ± 0.20%

0 = Not locked; internal oscillator tuning has not stabilized within ± 0.20%

bit 2 ACTLOCKPOL: Active Clock Tuning Lock Interrupt Polarity bit

1 = ACT lock interrupt is generated when ACTLOCK is ‘0’

0 = ACT lock interrupt is generated when ACTLOCK is ‘1’

bit 1 ACTORS: Active Clock Tuning Out-of-Range Status bit

1 = Out-of-range; oscillator frequency is outside of the OSCTUNE range

0 = In-range; oscillator frequency is within the OSCTUNE range

bit 0 ACTORSPOL: Active Clock Tuning Out of Range Interrupt Polarity bit

1 = ACT out of range interrupt is generated when ACTORS is ‘0’

0 = ACT out of range interrupt is generated when ACTORS is ‘1’