at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 659

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

37.3
Figure 37-2.
37.4
Table 37-1.
37.5
37.5.1
37.5.2
37.5.3
6249D–ATARM–20-Dec-07
Name
CANRX
CANTX
Application Block Diagram
I/O Lines Description
Product Dependencies
I/O Lines
Power Management
Interrupt
I/O Lines Description
Application Block Diagram
Description
CAN Receive Serial Data
CAN Transmit Serial Data
The pins used for interfacing the CAN may be multiplexed with the PIO lines. The programmer
must first program the PIO controller to assign the desired CAN pins to their peripheral function.
If I/O lines of the CAN are not used by the application, they can be used for other purposes by
the PIO Controller.
The programmer must first enable the CAN clock in the Power Management Controller (PMC)
before using the CAN.
A Low-power Mode is defined for the CAN controller: If the application does not require CAN
operations, the CAN clock can be stopped when not needed and be restarted later. Before stop-
ping the clock, the CAN Controller must be in Low-power Mode to complete the current transfer.
After restarting the clock, the application must disable the Low-power Mode of the CAN
controller.
The CAN interrupt line is connected on one of the internal sources of the Advanced Interrupt
Controller. Using the CAN interrupt requires the AIC to be programmed first. Note that it is not
recommended to use the CAN interrupt line in edge-sensitive mode.
CAN-based Application Layer
CAN Data Link Layer
CAN-based Profiles
CAN Physical Layer
Layers
AT91SAM9263 Preliminary
Implementation
CAN Controller
Transceiver
Software
Software
Type
Input
Output
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