PIC32MX320F032H_11 Datasheet, PDF (134/214 Pages) Microchip Technology – High-Performance, General Purpose and USB, 32-bit Flash Microcontrollers

PIC32MX3XX/4XX
REGISTER 26-2: DEVCFG1: DEVICE CONFIGURATION WORD 1 (CONTINUED)
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 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)
0 = CLKO output disabled
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 enabled (Two-Speed Start-up enabled)
0 = Internal External Switchover mode disabled (Two-Speed Start-up 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 (SOSC)
011 = Primary Oscillator 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)
Note 1: Do not disable POSC (POSCMOD = 00) when using this oscillator source.
DS61143H-page 134
© 2011 Microchip Technology Inc.