NEC UPD703116 User Manual page 531

<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.
(CRC field)
R
D
• 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.
(ACK field)
R
D
CHAPTER 11 FCAN CONTROLLER
Figure 11-16. ACK Field
ACK field
ACK slot ACK delimiter
(1 bit)
Figure 11-17. End of Frame (EOF)
End of frame (Interframe space or overload frame)
(7 bits)
User's Manual U14492EJ5V0UD
(End of frame)
(1 bit)
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