Техническая Спецификация для Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO
Модели
ATSAMD20-XPRO
307
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
22.3
Block Diagram
Figure 22-1. Event System Block Diagram
22.4
Signal Description
Not applicable.
22.5
Product Dependencies
In order to use this peripheral, other parts of the system must be configured correctly, as described below.
22.5.1 I/O Lines
Not applicable.
22.5.2 Power Management
The EVSYS can be used to wake up the CPU from all sleep modes, even if the clock used by the EVSYS channel and
the EVSYS bus clock are disabled. Refer to
the EVSYS bus clock are disabled. Refer to
for details on the different sleep modes.
In all power save modes where the clock for the EVSYS is stopped, the device can wake up the EVSYS clock.
Some event generators can generate an event when the system clock is stopped. The generic clock (GCLK_EVSYS_x)
for this channel will be restarted if the channel uses a synchronized path or a resynchronized path, without waking the
system from sleep. The clock remains active only as long as necessary to handle the event. After the event has been
handled, the clock will be turned off and the system will remain in the original sleep mode. This is known as
SleepWalking. When an asynchronous path is used, there is no need for the clock to be activated for the event to be
propagated to the user.
for this channel will be restarted if the channel uses a synchronized path or a resynchronized path, without waking the
system from sleep. The clock remains active only as long as necessary to handle the event. After the event has been
handled, the clock will be turned off and the system will remain in the original sleep mode. This is known as
SleepWalking. When an asynchronous path is used, there is no need for the clock to be activated for the event to be
propagated to the user.
On a software reset, all registers are set to their reset values and any ongoing events are canceled.
PERIPHERALS
EVSYS
CHANNELS
USER
MUX
PERIPHERALS
GCLK
GENERATOR
EVENTS
CLOCK REQUESTS
USERS EVENTS