Infineon C166 Series User Manual

AP29000
Connecting C166 and C500 Microcontroller to CAN
The Controller Area Network (CAN)
Application Note 13 V 1.0, 2004-02
3.3.1.2 Extended CAN Data Frame
Figure 2 Extended CAN Data Frame
The Extended CAN Data Frame is shown in figure 2.
It should be noted above, that to enable standard and extended frames to be sent
across a shared network it is necessary to split the 29 bit extended message identifier
into 11bit (most significant) and 18 bit (least significant) sections. This split ensures
that the Identifier Extension bit (IDE) can remain at the same bit position in both
standard and extended frames (see below).
Inter Frame Space
1 11
4
0...64 15 7
3
11 1 1 1
Bus Idle
Intermission
End of Frame
Data Field
Data Length Code
Start of Frame
18
Extended Data Frame
}
ACK Delimiter
ACK Slot
CRC Delimiter
CRC Sequence
}
}
CRC Field
21
SRR Bit (R)
(2 reserved (D))
RTR Bit (D)
Identifier
IDE Bit (R)
Extended Identifier
}
Control Field
(plus IDE Bit)
Acknowledge
Field
Arbitration Field
(without IDE Bit)
recessive Level
dominant Level

Infineon C166 Series Specifications

General

Brand	Infineon
Model	C166 Series
Category	Microcontrollers
Language	English