COM20020ILJP Datasheet, PDF (16/72 Pages) Microchip Technology – 5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
Datasheet
4.6.4 Acknowledgements
An Acknowledgement is used to acknowledge reception of a packet or as an affirmative response to FREE
BUFFER ENQUIRIES and is sent by the following sequence:
ƒ An ALERT BURST
ƒ An ACK (ACKnowledgement--ASCII code 86H) character
ALERT BURST
ACK
4.6.5 Negative Acknowledgements
A Negative Acknowledgement is used as a negative response to FREE BUFFER ENQUIRIES and is sent
by the following sequence:
ƒ An ALERT BURST
ƒ A NAK (Negative Acknowledgement--ASCII code 15H) character
ALERT BURST
NAK
Revision 12-05-06
Page 16
DATASHEET
SMSC COM20020I Rev D