TMC2072-MD SMSC, TMC2072-MD Datasheet - Page 25

• Manufacturer Part Number: TMC2072-MD
• Description: Network Controller & Processor ICs Peripheral Mode CircLink Cntlr
• Manufacturer: SMSC

Specifications of TMC2072-MD

• Product: Controller Area Network (CAN)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Peripheral Mode CircLink™ Controller
Datasheet
Chapter 2
2.1
2.2
SMSC TMC2072
ITT (Token)
FBE (Free Buffer Enquiries)
ACK (Acknowledgements)
NAK (Negative Acknowledgements)
PACKET (Data Packets)
ALERT
ALERT
ALERT
ALERT
ALERT
Communication Specification
- Data transfer bit rate
- The max. number of nodes
- Data transfer check
- Protocol
- Packet size
Message Class
The following five classes of messages are identical to those in the ARCNET protocol. Refer to the
ARCNET Controller COM20020 Rev. D Datasheet for more details.
ENQ
SOH
EOT
ACK
NAK
Functional Description
DID
DID
SID
DATASHEET
78.125 kbps to 2.5 Mbps (at 20 MHz Xtal), (5 Mbps at 40-MHz Xtal)
31 (ID = 00 is not available for user)
Only the destination node can check data transfer. Other nodes,
however, can receive (monitor) the same data.
Enhanced version of ARCNET (token passing)
256 bytes max. (User area: 253 bytes max.)
DID
DID
DID
Page 25
DID
CP
DATA X n
(ARCNET Layer)
N : MAX253
Revision 0.1 (06-07-07)
CRC
CRC