st92f120 STMicroelectronics, st92f120 Datasheet - Page 246

• Manufacturer Part Number: st92f120
• Description: 8/16-bit Flash Mcu Family With Ram, Eeprom And J1850 Blpd
• Manufacturer: STMicroelectronics

J1850 Byte Level Protocol Decoder (JBLPD)
J1850 BYTE LEVEL PROTOCOL DECODER (Cont’d)
Figure 114. J1850 Arbitration Example
Figure 115. J1850 Received Symbol Timing
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9
Case 1
Case 2
Case 3
Transmitting
Transmitting
Transmitting
Node A
Node B
Node C
Signal
on Bus
VPWO
VPWI
VPW Decoder
VPWO
TX2
VPWI
VPW Decoder
VPWO
TX2
VPWI
VPW Decoder
Active
Passive
Active
Passive
Active
Passive
Active
Passive
-6
0
8
14
SOF
SOF
SOF
SOF
22
0
0
0
0
0
0
0
0
178 µs
178 µs
178 µs
1 1 0
1 1 0
1 1 0 1
1 1 0
0 0 1
0 0
0 0
192
200
0
0
208
214
222