AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 542

• Manufacturer Part Number: AT91SAM7X128
• Description: MCU 32-Bit 91S ARM7TDMI RISC 128KB Flash 1.8V/3.3V 100-Pin LQFP
• Manufacturer: Atmel

Specifications of AT91SAM7X128

• Package: 100LQFP
• Device Core: ARM7TDMI
• Family Name: 91S
• Maximum Speed: 55 MHz
• Ram Size: 32 KB
• Program Memory Size: 128 KB
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 62
• Interface Type: CAN/Ethernet/SPI/I2S/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

36.8.5
Name:
Access Type:
• MBx: Mailbox x Event
0 = No event occurred on Mailbox x.
1 = An event occurred on Mailbox x.
An event corresponds to MRDY, MABT fields in the CAN_MSRx register.
• ERRA: Error Active Mode
0 = CAN controller is not in Error Active Mode.
1 = CAN controller is in Error Active Mode.
This flag is set depending on TEC and REC counter values. It is set when node is neither in Error Passive Mode nor in Bus
Off Mode.
This flag is automatically reset when above condition is not satisfied. Refer to
page 517
• WARN: Warning Limit
0 = CAN controller Warning Limit is not reached.
1 = CAN controller Warning Limit is reached.
This flag is set depending on TEC and REC counter values. It is set when at least one of the counter values exceeds 96.
This flag is automatically reset when above condition is not satisfied. Refer to
page 517
• ERRP: Error Passive Mode
0 = CAN controller is not in Error Passive Mode.
1 = CAN controller is in Error Passive Mode.
This flag is set depending on TEC and REC counters values.
A node is error passive when TEC counter is greater or equal to 128 (decimal) or when the REC counter is greater or equal
to 128 (decimal).
This flag is automatically reset when above condition is not satisfied. Refer to
page 517
6120H–ATARM–17-Feb-09
OVLSY
TSTP
MB7
31
23
15
–
7
for more information.
for more information.
for more information.
CAN Status Register
TBSY
TOVF
MB6
30
22
14
CAN_SR
Read-only
–
6
WAKEUP
RBSY
MB5
29
21
13
–
5
SLEEP
BERR
MB4
AT91SAM7X512/256/128 Preliminary
28
20
12
–
4
FERR
BOFF
MB3
27
19
11
–
3
Section 36.6.4.6 “Error Interrupt Handler” on
Section 36.6.4.6 “Error Interrupt Handler” on
Section 36.6.4.6 “Error Interrupt Handler” on
AERR
ERRP
MB2
26
18
10
–
2
WARN
SERR
MB1
25
17
9
–
1
CERR
ERRA
MB0
24
16
8
–
0
542