SAM3X8C Atmel Corporation, SAM3X8C Datasheet - Page 542

• Manufacturer Part Number: SAM3X8C
• Manufacturer: Atmel Corporation

28.2.3
Figure 28-6. General Clock Block Diagram
542
542
XOUT32
(Supply C ontroller)
XOUT
XIN32
XIN
XTALSEL
SAM3X/A
SAM3X/A
Block Diagram
Clock G ene rator
RC Oscillator
Embedded
32 kH z R C
4/8/12 MHz
Embedded
32768 H z
Management
Oscilla tor
Oscilla tor
Resonator
Status
3-20 MH z
Oscilla tor
Crystal
Ceramic
Controller
Crystal
Fast
Power
or
Control
0
1
0
1
MOSCSEL
PLLA and
Divider /2
USB UTMI
PLL
PLLADIV2
PLLA Clock
PLLA CK
UPLL Clock
UPLL CK
Main Clock
MAINCK
Sl ow Clock
SLCK
UPLLDIV
Divider
/1, /2
SLCK
MAINCK
UPLLCK/2
PLLA CK
CSS
Master Clock Controller
PLLA CK
UPLL CK/2
SLCK
MAINCK
UPLL CK/2
PLLA CK
MCK
(P MC_MCKR)
/1,/2,/3,/4,/8,
/16,/32,/64
Prescaler
PRES
USBS
USB Clock C ontroller (PMC_USB)
CSS
Programmable Clock Controller
/1,/2,/4,/8,
/16,/32,/64
Prescaler
/1,/2,/3,...,/16
(P MC_PCKx)
Divider
USBDIV
PRES
Peripherals
Clock C ontroller
(PMC_PCERx)
Sleep M ode
Processor
Controller
Divider
ON/OFF
Clock
ON/OFF
/8
ON/OFF
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
Free running clock
Processor clock
USB HS Clock
USB_480M
USB FS Clock
USB_48M
Master clock
HCLK
int
SysTick
FCLK
MCK
periph_clk[..]
pck[..]