5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
Two CRC (Cyclic Redundancy Check) characters. The CRC polynomial used is: X16 + X15 + X2 + 1.
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:
An ALERT BURST
An ACK (ACKnowledgement--ASCII code 86H) character
ALERT BURST
ACK
Negative Acknowledgements
A Negative Acknowledgement is used as a negative response to FREE BUFFER ENQUIRIES and is sent by the
following sequence:
An ALERT BURST
A NAK (Negative Acknowledgement--ASCII code 15H) character
ALERT BURST
NAK
Revision 12-06-06
14
SMSC COM20020I 3.3V
DATASHEET