st92f124 STMicroelectronics, st92f124 Datasheet - Page 339

• Manufacturer Part Number: st92f124
• Description: 8/16-bit Single Voltage Flash Mcu Family With Ram, E3 Tmemulated Eeprom, Can 2.0b And J1850 Blpd
• Manufacturer: STMicroelectronics

CONTROLLER AREA NETWORK (Cont’d)
Figure 153. CAN Frames
Overload Delimiter
Error Delimiter or
End Of Frame or
Remote Frame
Data Frame or
Any Frame
Inter-Frame Space
Inter-Frame Space
Inter-Frame Space
Intermission
Overload Flag
Error Flag
3
Std Arbitr. Field
Arbitration Field
Arbitration Field
6
6
Overload Frame
Transmission
Inter-Frame Space
Suspend
ID
ID
ID
Flag Echo
12
12
12
Error Frame
8
Overload Delimiter
6
8
Control Field
Control Field
Error Delimiter
Bus Idle
Ext Arbitr. Field
Inter-Frame Space
or Error Frame
8
6
6
DLC
DLC
Data Frame (Extended Identifier)
Data Frame (Standard identifier)
20
Remote Frame
Data Frame or
Remote Frame
Data Field
or Overload Frame
Inter-Frame Space
44
8 * N
44 + 8 * N
CRC Field
Ctrl Field
CONTROLLER AREA NETWORK (bxCAN)
64 + 8 * N
CRC
16
6
DLC
Data Field
8 * N
CRC Field
Ack Field
CRC
Notes:
• 0
• SOF = Start Of Frame
• ID = Identifier
• RTR = Remote Transmission Request
• IDE = Identifier Extension Bit
• r0 = Reserved Bit
• DLC = Data Length Code
• CRC = Cyclic Redundancy Code
• Error flag: 6 dominant bits if node is error
• Suspend transmission: applies to error
• EOF = End of Frame
• ACK = Acknowledge bit
16
active else 6 recessive bits.
passive nodes only.
2
N
CRC Field
CRC
7
End Of Frame
16
8
Ack Field
2
Inter-Frame Space
or Overload Frame
Ack Field
or Overload Frame
Inter-Frame Space
or Overload Frame
Inter-Frame Space
EOF
2
7
EOF
7
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