SAM9X25 Atmel Corporation, SAM9X25 Datasheet - Page 929

• Manufacturer Part Number: SAM9X25
• Manufacturer: Atmel Corporation

Specifications of SAM9X25

• 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: 2
• Sd / Emmc: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 10
• Adc Speed (ksps): 440
• Resistive Touch Screen: No
• 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

Figure 41-18. Consumer Handling
41.8.4
41.8.4.1
Figure 41-19. Mailbox Timestamp
11054A–ATARM–27-Jul-11
11054A–ATARM–27-Jul-11
MTIMESTAMP
MTIMESTAMP
(CAN_MCRx)
(CAN_MSRx)
(CAN_MSRx)
TIMESTAMP
(CAN_TSTP)
CAN_MDHx)
(CAN_MSRx)
(CAN_MDLx
(CAN_MSRy)
(CAN_MR)
CAN BUS
CAN BUS
CAN_TIM
TEOF
MRDY
MTCR
MMI
CAN Controller Timing Modes
Timestamping Mode
Using the free running 16-bit internal timer, the CAN controller can be set in one of the two fol-
lowing timing modes:
Timestamping Mode is enabled by clearing the TTM bit in the CAN_MR register. Time Triggered
Mode is enabled by setting the TTM bit in the CAN_MR register.
Each mailbox has its own timestamp value. Each time a message is sent or received by a mail-
box, the 16-bit value MTIMESTAMP of the CAN_TIMESTP register is transferred to the LSB bits
of the CAN_MSRx register. The value read in the CAN_MSRx register corresponds to the inter-
nal timer value at the Start Of Frame or the End Of Frame of the message handled by the
mailbox.
Remote Frame
Timestamp 1
• Timestamping Mode: The value of the internal timer is captured at each Start Of Frame or
• Time Triggered Mode: The mailbox transfer operation is triggered when the internal timer
Timestamp 1
Message 1
each End Of Frame.
reaches the mailbox trigger.
Start of Frame
Message x
End of Frame
Message x
Remote Frame
Message 2
Message y
Timestamp 2
Timestamp 2
Message y
SAM9X25
SAM9X25
929
929