Datasheet

17.3 Block Diagram
Figure 17-1. SYSCTRL Block Diagram
XOSC
XOSC32K
OSC32K
OSCULP32K
OSC8M
DFLL48M
VOLTAGE
REFERENCE
SYSTEM
OSCILLATORS
CONTROL
POWER
MONITOR
CONTROL
VOLTAGE
REFERENCE
CONTROL
STATUS
(PCLKSR register)
INTERRUPTS
GENERATOR
BOD33
Interrupts
SYSCTRL
FDPLL96M
17.4 Signal Description
Signal Name Types Description
XIN Analog Input Multipurpose Crystal Oscillator or external clock generator input
XOUT Analog Output External Multipurpose Crystal Oscillator output
XIN32 Analog Input 32kHz Crystal Oscillator or external clock generator input
XOUT32 Analog Output 32kHz Crystal Oscillator output
The I/O lines are automatically selected when XOSC or XOSC32K are enabled. Refer to Oscillator
Pinout.
Related Links
7. I/O Multiplexing and Considerations
17.5 Product Dependencies
In order to use this peripheral, other parts of the system must be configured correctly, as described below.
SAM D21 Family
SYSCTRL – System Controller
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 174