Atmel SAM4L Xplained Pro Evaluation Kit Atmel ATSAM4L-XPRO ATSAM4L-XPRO Data Sheet
Product codes
ATSAM4L-XPRO
202
42023E–SAM–07/2013
ATSAM4L8/L4/L2
13. System Control Interface (SCIF)
Rev: 1.3.0.0
13.1
Features
•
Supports crystal oscillator 0.6-30MHz (OSC0)
•
Supports Digital Frequency Locked Loop 20-150MHz (DFLL)
•
Supports Phase Locked Loop 48-240MHz (PLL)
•
Integrated low-power RC oscillator (RCSYS)
•
Provides Generic clocks (GCLK) with wide frequency range
•
Controls 80MHz integrated RC Oscillator (RC80M)
•
Controls 4/8/12MHz integrated RC Oscillator (RCFAST)
13.2
Overview
The System Control Interface (SCIF) controls the oscillators, Generic Clocks, PLL and DFLL. It
is located in Core domain.
is located in Core domain.
13.3
Block Diagram
Figure 13-1. SCIF Block Diagram
OSC0
RCSYS
XIN
XOUT
SYSTEM CONTROL
INTERFACE
(SCIF)
APB BUS
PLL
DFLL
NVIC
RCFAST
RC80M
GENERIC
CLOCK
CONTROLLER
FRACTIONAL
PRESCALER
HIGH
RESOLUTION
PRESCALER
To POWER
MANAGER
System Clocks Vector
To
PERIPHERALS
Generic Clocks Vector