AT91SAM9260 ATMEL Corporation, AT91SAM9260 Datasheet - Page 29

• Manufacturer Part Number: AT91SAM9260
• Description: AT91 ARM Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

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Figure 9-2.
9.5
6221DS–ATARM–22-Sep-06
Power Management Controller
Clock Generator Block Diagram
• Provides:
• Five flexible operating modes:
– the Processor Clock PCK
– the Master Clock MCK, in particular to the Matrix and the memory interfaces
– the USB Device Clock UDPCK
– independent peripheral clocks, typically at the frequency of MCK
– 2 programmable clock outputs: PCK0, PCK1
– Normal Mode, processor and peripherals running at a programmable frequency
– Idle Mode, processor stopped waiting for an interrupt
– Slow Clock Mode, processor and peripherals running at low frequency
– Standby Mode, mix of Idle and Backup Mode, peripheral running at low frequency,
– Backup Mode, Main Power Supplies off, VDDBU powered by a battery
processor stopped waiting for an interrupt
OSC_SEL
XOUT32
PLLRCA
XIN32
XOUT
XIN
Clock Generator
Management
Slow Clock
Controller
On Chip
RC OSC
Oscillator
Oscillator
Divider A
Divider B
Status
PLL and
PLL and
Power
Main
Control
AT91SAM9260 Preliminary
Main Clock
MAINCK
PLLA Clock
PLLACK
PLLB Clock
PLLBCK
Slow Clock
SLCK
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