AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 310

• 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: -

25.16.23 CAN Channel x Status Register
Name:
Access:
Offset:
• ACK: Acknowledge Error
0: No acknowledge error during last transmission.
1: An acknowledge error occurred during the last transmission. There was not a dominant bit during the ACK slot.
• FRAME: Frame Error
0: No frame error during last communication.
1: A frame error occurred during last communication. A fixed form bit contained one or more illegal bits.
• CRC: CRC Error
0: No CRC error during last reception.
1: A CRC error has been detected during the last reception. Received CRC sequence is not equal to the calculated one.
• STUFF: Stuffing Error
0: No stuffing error during the last communication.
1: A stuffing error occurred during the last communication. At least 6 consecutive equal bits have been detected.
• BUS: Bus Error
0: No bus error during last transmission.
1: A bus error occurred during last transmission. The transmitter sent a dominant bit but a recessive bit was detected on the
network.
• RXOK: Reception Completed
0: No new reception completed.
1: A reception was completed without any error.
• TXOK: Transmission Completed
0: No new transmission completed.
1: A transmission was completed without any error.
310
RFRAME
31
23
15
–
–
–
7
AT91SAM7A1
Read-only
0xXXC
CAN_SRx
TXOK
30
22
14
–
–
–
6
RXOK
29
21
13
–
–
–
5
BUS
28
20
12
–
–
–
4
OVRUN
STUFF
27
19
11
–
–
3
FILLED
CRC
26
18
10
–
–
2
FRAME
DLCW
25
17
–
–
9
1
6048B–ATARM–29-Jun-06
ACK
24
16
–
–
8
–
0