upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 530

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

(2)
Remarks: 1. The data field is not transferred even if the control field’s data length code is not
(3)
Remark:
530
Remote frame
A remote frame is composed of six fields.
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.
• If a dominant level is detected in the bus idle state, a hardware synchronization is performed
• If a dominant level is sampled at the sample point following such a hardware synchronization,
(the current TQ is assigned to be the SYNC segment).
the bit is assigned to be a SOF. If a recessive level is detected, the protocol layer returns to the
bus idle state and regards the preceding dominant pulse as a noise only. In this case an error
frame is not generated.
2. D: Dominant = 0
D: Dominant = 0
R: Recessive = 1
R
D
“0000B”.
R: Recessive = 1
<1>
(Interframe space or bus idle)
<2>
Figure 16-5: Start of Frame (SOF)
<3>
Remote frame
R
D
Chapter 16 FCAN Controller
Figure 16-4: Remote Frame
User’s Manual U16702EE3V2UD00
<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)