SAM9X35 Atmel Corporation, SAM9X35 Datasheet - Page 918

• Manufacturer Part Number: SAM9X35
• Manufacturer: Atmel Corporation

Specifications of SAM9X35

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 105
• Ext Interrupts: 105
• Usb Transceiver: 3
• Usb Speed: Hi-Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 3
• Uart: 7
• Can: 2
• Lin: 4
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 2
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 10
• Adc Speed (ksps): 440
• Resistive Touch Screen: Yes
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: DDR/LPDDR, SDRAM/LPSDR
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 0.9 to 1.1
• Fpu: No
• Mpu / Mmu: No/Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

41.8.2
918
918
SAM9X35
SAM9X35
CAN Controller Interrupt Handling
Figure 41-10. Possible Initialization Procedure
There are two different types of interrupts. One type of interrupt is a message-object related
interrupt, the other is a system interrupt that handles errors or system-related interrupt sources.
All interrupt sources can be masked by writing the corresponding field in the CAN_IDR register.
They can be unmasked by writing to the CAN_IER register. After a power-up reset, all interrupt
sources are disabled (masked). The current mask status can be checked by reading the
CAN_IMR register.
The CAN_SR register gives all interrupt source states.
The following events may initiate one of the two interrupts:
• Message object interrupt
• System interrupts
– Data registers in the mailbox object are available to the application. In Receive
– A sent transmission was aborted.
– Bus off interrupt: The CAN module enters the bus off state.
– Error passive interrupt: The CAN module enters Error Passive Mode.
– Error Active Mode: The CAN module is neither in Error Passive Mode nor in Bus Off
Mode, a new message was received. In Transmit Mode, a message was transmitted
successfully.
mode.
Configure a Mailbox in Reception Mode
Enable CAN Controller Interrupt Line
(ABM == 1 and CANEN == 1)
Enable CAN Controller Clock
(CAN_SR or CAN_MSRx)
ABM = 0 and CANEN = 0
CANEN = 1 (ABM == 0)
Change CAN_BR value
End of Initialization
Errors ?
(PMC)
(AIC)
No
Yes
11055B–ATARM–22-Sep-11
11055B–ATARM–22-Sep-11