SAM9X35 Atmel Corporation, SAM9X35 Datasheet - Page 923
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SAM9X35
Manufacturer Part Number
SAM9X35
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(248 pages)
2.SAM9X25.pdf
(45 pages)
3.SAM9X25.pdf
(1145 pages)
4.SAM9X25.pdf
(45 pages)
5.SAM9X25.pdf
(1325 pages)
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
- SAM9261 PDF datasheet
- SAM9X25 PDF datasheet #2
- SAM9X25 PDF datasheet #3
- SAM9X25 PDF datasheet #4
- SAM9X25 PDF datasheet #5
- Current page: 923 of 1325
- Download datasheet (30Mb)
Figure 41-14. Chaining Three Mailboxes to Receive a Buffer Split into Four Messages
41.8.3.2
11055B–ATARM–22-Sep-11
11055B–ATARM–22-Sep-11
(CAN_MSRx)
(CAN_MSRx)
(CAN_MSRy)
(CAN_MSRy)
(CAN_MSRz)
(CAN_MSRz)
CAN BUS
MRDY
MRDY
MRDY
MMI
MMI
MMI
Transmission Handling
A mailbox is in Transmit Mode once the MOT field in the CAN_MMRx register has been config-
ured. Message ID and Message Acceptance mask must be set before Receive Mode is enabled.
After Transmit Mode is enabled, the MRDY flag in the CAN_MSR register is automatically set
until the first command is sent. When the MRDY flag is set, the software application can prepare
a message to be sent by writing to the CAN_MDx registers. The message is sent once the soft-
ware asks for a transfer command setting the MTCR bit and the message data length in the
CAN_MCRx register.
The MRDY flag remains at zero as long as the message has not been sent or aborted. It is
important to note that no access to the mailbox data register is allowed while the MRDY flag is
cleared. An interrupt is pending for the mailbox while the MRDY flag is set. This interrupt can be
masked depending on the mailbox flag in the CAN_IMR global register.
It is also possible to send a remote frame setting the MRTR bit instead of setting the MDLC field.
The answer to the remote frame is handled by another reception mailbox. In this case, the
device acts as a consumer but with the help of two mailboxes. It is possible to handle the remote
frame emission and the answer reception using only one mailbox configured in Consumer Mode.
Refer to the section
Several messages can try to win the bus arbitration in the same time. The message with the
highest priority is sent first. Several transfer request commands can be generated at the same
time by setting MBx bits in the CAN_TCR register. The priority is set in the PRIOR field of the
CAN_MMRx register. Priority 0 is the highest priority, priority 15 is the lowest priority. Thus it is
possible to use a part of the message ID to set the PRIOR field. If two mailboxes have the same
priority, the message of the mailbox with the lowest number is sent first. Thus if mailbox 0 and
Message s1
Reading CAN_MDH & CAN_MDL for mailboxes x, y and z
Reading CAN_MSRx, CAN_MSRy and CAN_MSRz
Message s2
“Remote Frame Handling” on page
Message s3
Writing MBx MBy MBz in CAN_TCR
Message s4
924.
Buffer split in 4 messages
SAM9X35
SAM9X35
923
923
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