TMC2074-NE SMSC, TMC2074-NE Datasheet - Page 109
TMC2074-NE
Manufacturer Part Number
TMC2074-NE
Description
Network Controller & Processor ICs Standalone Mode CircLink Cntlr
Manufacturer
SMSC
Datasheet
1.TMC2074-NU.pdf
(116 pages)
Specifications of TMC2074-NE
Product
Controller Area Network (CAN)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Dual Mode CircLink™ Controller
Datasheet
SMSC TMC2074
Measure 1
The transmitting end transmits “0” as a bit 10 ending. If the receiving end receives a 10-bit “0” sequence, it
ends reception and enters an Alert pattern.
Measure 2
A restriction is set to read Symbol 01111111 not as bit “0100” but as “0000”. This works by automatically
transitioning to S11 subsequent symbols that are 0 when symbol 11 is detected in S01b state. However, if
they remain as 1, they stay in the S01b and are read as bit “0”. On the other hand, as a countermeasure
against silent nodes like the ARCNET not actively data flowing symbol “01” during “0” ending, when
reception data is fixed at either 0 or 1, they are not read as bit “1” but as bit “0”. Due to this, measures are
taken even if there is a node with temporary non-dataflow “0” ending output. Due to the highest
consecutive value after a single symbol in the CMI being 3 symbols, fixed symbol 0 or 1 sequence is
separated from normal CMI code and can be read as non-dataflow bit “0”.
DATASHEET
Page 109
Revision 0.2 (10-23-08)
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