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OBD-II
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OBD-II fields
OBD-II sync/SOF
1B
Control
2B
Address
2B
Payload
8B
Integrity
2B
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OBD-II
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CAN arbitration (two TX)
Node A
Bus
Node B
SOF + ID 0x100
SOF + ID 0x200
dominant wins
A continues
B loses arb
becomes RX
DATA + CRC
ACK slot
B ACKs
sip
h323
can-arb
isup
webrtc
ss7
generic