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DVR 数据表(PDF) 110 Page - Microchip Technology |
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DVR 数据表(HTML) 110 Page - Microchip Technology |
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110 / 416 page  PIC24FJ256GA705 FAMILY DS30010118D-page 110 2016-2018 Microchip Technology Inc. REGISTER 9-6: REFOCONL: REFERENCE OSCILLATOR CONTROL REGISTER LOW R/W-0 U-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 R-0 ROEN — ROSIDL ROOUT ROSLP — ROSWEN ROACTIVE bit 15 bit 8 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 — — — — ROSEL3 ROSEL2 ROSEL1 ROSEL0 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 ROEN: Reference Oscillator Output Enable bit 1 = Reference Oscillator module is enabled 0 = Reference Oscillator is disabled bit 14 Unimplemented: Read as ‘0’ bit 13 ROSIDL: REFO Stop in Idle Mode bit 1 = Discontinues module operation when device enters Idle mode 0 = Continues module operation in Idle mode bit 12 ROOUT: Reference Clock Output Enable bit 1 = Reference clock is driven out on the REFO pin 0 = Reference clock is not driven out on the REFO pin bit 11 ROSLP: Reference Oscillator Output Stop in Sleep bit 1 = Reference Oscillator continues to run in Sleep 0 = Reference Oscillator is disabled in Sleep bit 10 Unimplemented: Read as ‘0’ bit 9 ROSWEN: Reference Clock RODIVx Switch Enable bit 1 = Switch clock divider; clock divider switching is currently in progress 0 = Clock divider switch has been completed bit 8 ROACTIVE: Reference Clock Request Status bit 1 = Reference clock is active (user should not change the REFO settings) 0 = Reference clock is inactive (user can update the REFO settings) bit 7-4 Unimplemented: Read as ‘0’ bit 3-0 ROSEL<3:0>: Reference Clock Source Select bits 1111-1001 = Reserved 1000 = REFI pin 0111 = Reserved 0110 = PLL 0101 = SOSC 0100 = LPRC 0011 = FRC 0010 = POSC 0001 = System clock (FOSC/2) 0000 = FOSC |
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