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Getac Technology Corporation V110GD Manual De Usuario

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© 2011 Microchip Technology Inc.
Preliminary
DS61168C-page 229
PIC32MX1XX/2XX
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 13-12 FPBDIV<1:0>: Peripheral Bus Clock Divisor Default Value bits
11
 = PBCLK is SYSCLK divided by 8
10
 = PBCLK is SYSCLK divided by 4
01
 = PBCLK is SYSCLK divided by 2
00
 = PBCLK is SYSCLK divided by 1
bit 11
Reserved:
 Write ‘1’
bit 10
OSCIOFNC:
 CLKO Enable Configuration bit
1
 = CLKO output disabled
0
 = CLKO output signal active on the OSCO pin; Primary Oscillator must be disabled or configured for the
External Clock mode (EC) for the CLKO to be active (POSCMOD<1:0> = 11 or 00)
bit 9-8
POSCMOD<1:0>:
 Primary Oscillator Configuration bits
11
 = Primary Oscillator disabled
10
 = HS Oscillator mode selected
01
 = XT Oscillator mode selected
00
 = External Clock mode selected
bit 7
IESO:
 Internal External Switchover bit
1
 = Internal External Switchover mode is enabled (Two-Speed Start-up is enabled)
0
 = Internal External Switchover mode is disabled (Two-Speed Start-up is disabled)
bit 6
Reserved:
 Write ‘1’
bit 5
FSOSCEN:
 Secondary Oscillator Enable bit
1
 = Enable Secondary Oscillator
0
 = Disable Secondary Oscillator
bit 4-3
Reserved:
 Write ‘1’
bit 2-0
FNOSC<2:0>:
 Oscillator Selection bits
111
 = Fast RC Oscillator with divide-by-N (FRCDIV)
110
 = FRCDIV16 Fast RC Oscillator with fixed divide-by-16 postscaler
101
 = Low-Power RC Oscillator (LPRC)
100
 = Secondary Oscillator (S
OSC
)
011
 = Primary Oscillator (P
OSC
) with PLL module (XT+PLL, HS+PLL, EC+PLL) 
010
 = Primary Oscillator (XT, HS, EC)
(1)
001
 = Fast RC Oscillator with divide-by-N with PLL module (FRCDIV+PLL)
000
 = Fast RC Oscillator (FRC)
REGISTER 26-2:
DEVCFG1: DEVICE CONFIGURATION WORD 1 (CONTINUED)
Note 1:
Do not disable the P
OSC
 (POSCMOD = 11) when using this oscillator source.