CHAPTER 11 FCAN CONTROLLER
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User’s Manual U14492EJ3V0UD
<6> ACK field
The ACK field is used to confirm normal reception.
It includes a 1-bit ACK slot and a 1-bit ACK delimiter.
Figure 11-15. ACK Field
R
D
ACK slot
(1 bit)
ACK delimiter
(1 bit)
ACK field
(End of frame)
(CRC field)
• The receiving node outputs the following depending on whether or not an error is detected between
the start of frame field and the CRC field.
If an error is detected: ACK slot = Recessive (R)
If no error is detected: ACK slot = Dominant (D)
• The transmitting node outputs two “recessive (R)” bits and confirms the receiving node’s receive
status.
<7> End of frame (EOF)
The end of frame field indicates the end of transmission or reception.
It includes 7 “recessive (R)” bits.
Figure 11-16. End of Frame (EOF)
R
D
End of frame
(7 bits)
(Interframe space or overload frame)
(ACK field)
Содержание V850E/IA1 mPD703116
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