upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 645

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

CAN Controller (CAN)
Figure 19-4
Figure 19-5
R
D
Note
Note
(Interframe space or bus idle)
<1>
(2)
(3)
Remote frame
A remote frame is composed of six fields.
Remote frame
1.
2.
Description of fields
<1> Start of frame (SOF)
The start of frame field is located at the start of a data frame or remote frame.
Start of frame (SOF)
D: Dominant = 0
R: Recessive = 1
• If dominant level is detected in the bus idle state, the start of frame is
• If recessive level is detected at the sample point of the start of frame, the
Preliminary User’s Manual U17566EE1V2UM00
<2>
recognized.
preceding dominant level is judged as noise and the bus idle state is entered
again.
The data field is not transferred even if the control field’s data length code
is not “0000B”.
D: Dominant = 0
R: Recessive = 1
<3>
Remote frame
R
D
<5>
Start of frame
<6> <7>
1 bit
<8>
(Arbitration field)
Interframe space
End of frame (EOF)
ACK field
CRC field
Control field
Arbitration field
Start of frame (SOF)
Chapter 19
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