pic32mx320f064h Microchip Technology Inc., pic32mx320f064h Datasheet - Page 219

• Manufacturer Part Number: pic32mx320f064h
• Description: 64/100-pin General Purpose, 32-bit Flash Microcontrollers
• Manufacturer: Microchip Technology Inc.

FIGURE 10-3:
FIGURE 10-4:
© 2007 Microchip Technology Inc.
Clock from
Ext. System
Clock from
Ext. System
PBCLK
I/O
EXTERNAL CLOCK INPUT
OPERATION WITH
CLOCK-OUT (EC, ECPLL
MODE)
EXTERNAL CLOCK INPUT
OPERATION WITH NO
CLOCK-OUT (EC, ECPLL
MODE)
OSCI
OSCO (Clock Out)
OSCI
I/O (OSCO)
PIC32MX
PIC32MX
Advance Information
10.2.1.2
To configure the POSC the following steps should be
performed:
1.
2.
3.
Select POSC as the default oscillator in the
device Configuration register, DEVCFG1, by
setting FNOSC<2:0> = ‘010’ without PLL or
‘011’ with PLL.
Select the desired mode HS, XT, or EC, using
POSCMD<1:0> in DEVCFG1.
If the PLL is to be used:
a)Select the appropriate Configuration bits for
b)Select the desired PLL multiplier ratio using
c)At runtime, select the desired PLL output
the PLL input divider to scale the input
frequency to be between 4 MHz and 5 MHz
using FPLLIDIV<2:0> in DEVCFG2.
FPLLMULT<2:0>) in DEVCFG2.
divider using PLLODIV (OSCCON<29:27>) to
provide the desired clock frequency. The
default value is set by DEVCFG1.
PIC32MX FAMILY
Primary Oscillator (POSC)
Configuration
DS61143A-page 217