DSPIC33FJ64GS406 Microchip Technology Inc., DSPIC33FJ64GS406 Datasheet - Page 188

• Manufacturer Part Number: DSPIC33FJ64GS406
• Description: High-performance, 16-bit Digital Signal Controllers
• Manufacturer: Microchip Technology Inc.

dsPIC33FJ32GS406/606/608/610 and dsPIC33FJ64GS406/606/608/610
FIGURE 9-1:
DS70591C-page 188
Auxiliary Clock Generation
POSCCLK
Note 1:
SOSCO
R
SOSCI
(2)
Reference Clock Generation
POSCCLK
ASRCSEL
2:
3:
OSC1
OSC2
F
OSC
Oscillator
See Figure 9-2 for PLL details.
If the Oscillator is used with XT or HS modes, an external parallel resistor with the value of 1 M must be connected.
REFCLKO functionality is not available if the Primary Oscillator is used.
TUN<5:0>
FRCCLK
FRC
ROSEL
Primary Oscillator (P
Secondary Oscillator (S
dsPIC33FJ32GS406/606/608/610 and dsPIC33FJ64GS406/606/608/610
OSCILLATOR SYSTEM DIAGRAM
POSCMD<1:0>
FRCSEL
Oscillator
LPRC
RODIV<3:0>
÷ N
LPOSCEN
OSC
S1
S3
÷ 16
POSCCLK
)
OSC
APLL
x16
REFCLKO
)
FRCDIV<2:0>
(3)
PLL
Preliminary
(1)
ENAPLL
XTPLL, HSPLL,
ECPLL, FRCPLL
To ADC and
Auxiliary Clock
Generator
F
VCO (1)
Clock Fail
S7
XT, HS, EC
FRCDIV16
FRCDIVN
SOSC
LPRC
FRC
F
Clock Switch
NOSC<2:0> FNOSC<2:0>
VCO (1)
S1/S3
S7
S0
S5
S4
S2
S6
SELACLK
÷ 2
Reset
 2010 Microchip Technology Inc.
APSTSCLR<2:0>
DOZE<2:0>
÷ N
ACLK
WDT, PWRT,
Timer 1
FSCM
To PWM/ADC
F
F
F
CY
P
OSC