AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 307

• Manufacturer Part Number: AT91SAM7A1-AU
• Description: IC ARM7 MCU 32BIT ROMLESS144LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7A1-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 49
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• For Use With: AT91SAM7A1-EK - BOARD EVAL FOR AT91SAM7A1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

25.16.20 CAN Channel x Control Register
Name:
Access:
Offset:
• DLC[3:0]: Data Length Code
This is the number of bytes in the data field of a message (from 0 to 8). This value is updated whenever a frame is received
(data or remote). If the incoming DLC differs from the expected one, a warning is issued in the status register of the channel
(CAN_SRX).
• IDE: Extended Identifier Flag
0: Identifier is 11 bits long (CAN rev 2.0A).
1: Identifier is 29 bits long (CAN rev 2.0B).
• RPLYV: Automatic Reply
0: No effect.
1: Channel x makes an automatic reply after receiving a remote frame.
• PCB: Channel Producer
0: Channel x is consumer.
1: Channel x is producer.
Bit PCB resets to 0 after a transmission.
• CHANEN: Channel Enable
0: Channel x disabled.
1: Channel x enabled.
Note:
• OVERWRITE: Channel Overwrite Mode
0: Channel x in normal mode.
1: Channel x in overwrite mode.
In overwrite mode, the channel is not disabled after each reception. New frames overwrite the previous frame.
In normal mode, the channel is automatically disabled after a frame reception.
6048B–ATARM–29-Jun-06
CHANEN
31
23
15
–
–
–
7
For detailed information, see
CAN_CRx
Read/Write
0xXX0
PCB
30
22
14
–
–
–
6
”Example of Use” on page
RPLYV
29
21
13
–
–
–
5
IDE
28
20
12
–
–
–
4
290.
27
19
11
–
–
–
3
26
18
10
–
–
–
2
DLC[3:0]
AT91SAM7A1
25
17
–
–
9
–
1
OVERWRITE
24
16
–
–
8
0
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