TMC2074-NE SMSC, TMC2074-NE Datasheet - Page 43

• Manufacturer Part Number: TMC2074-NE
• Description: Network Controller & Processor ICs Standalone Mode CircLink Cntlr
• Manufacturer: SMSC

Specifications of TMC2074-NE

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

Dual Mode CircLink™ Controller
Datasheet
2.9.2
SMSC TMC2074
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1 Clear FRCV Bit
2 Release Interrupt Mask
3 Write Receive Flag
4 Read EC Status
5 Read Receive Flag
6 Read Packet
7 Interrupt Mask
CPU Side
( ): it is FBE, PAC addressed to self
Example of Receive Flow in Free Format Mode
(RXMH/RXML REGISTER: When in RXM07 = 0)
A CPU controls a series of sequence such as "Issuing RX CMD → Handling interrupt after RX → Packet
read":
After the receive completion in the free format mode, the FRCV (Free format receive end flag) in the EC
interruption status register (INTSTA) changes from 0 to 1, permitting the flag to be an interrupt source.
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DATASHEET
Page 43
FRCV,RXF07 = 0->1
Interrupt occure
RXF07 = 1->0
FRCV = 1->0
TMC2074/72
(ACK)
(ACK)
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LAN Side
FBE
PAC [SID=07h]
Revision 0.2 (10-23-08)