COM20020I3V-DZD-TR Standard Microsystems (SMSC), COM20020I3V-DZD-TR Datasheet - Page 14

• Manufacturer Part Number: COM20020I3V-DZD-TR
• Manufacturer: Standard Microsystems (SMSC)

Specifications of COM20020I3V-DZD-TR

• Number Of Transceivers: 1
• Operating Supply Voltage (typ): 3.3V
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Compliant

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:
Negative Acknowledgements
A Negative Acknowledgement is used as a negative response to FREE BUFFER ENQUIRIES and is sent by the
following sequence:
Revision 12-06-06
Two CRC (Cyclic Redundancy Check) characters. The CRC polynomial used is: X
An ALERT BURST
An ACK (ACKnowledgement--ASCII code 86H) character
An ALERT BURST
A NAK (Negative Acknowledgement--ASCII code 15H) character
ALERT BURST
ALERT BURST
ACK
NAK
DATASHEET
14
5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
16
+ X
15
+ X
2
SMSC COM20020I 3.3V
+ 1.