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Functional Description
Active
Passive
T
Active
Passive
T
Active
Passive
Active
Passive
•
Invalid Active Bit
If the active to passive transition beginning the next data bit or symbol occurs between the passive to active transition beginning the
current data bit or symbol and T
•
Valid Active Logic One
If the active to passive transition beginning the next data bit or symbol occurs between T
would be considered a logic one. See
•
Valid Active Logic Zero
If the active to passive transition beginning the next data bit or symbol occurs between T
would be considered a logic zero. See
•
Valid SOF Symbol
If the active to passive transition beginning the next data bit or symbol occurs between T
would be considered a valid SOF symbol. See
Active
Passive
20-24
200µs
128µs
64µs
rva2(Min)
T
rva2(Min)
rva2(Max)
T
rva1(Min)
Figure 20-8. J1850 VPW Active Symbols
, the current bit would be invalid. See
rva2(Min)
Figure
20-8(2).
Figure
20-8(3).
Figure
240µs
Figure 20-9. J1850 VPW BREAK Symbol
MPC5200B Users Guide, Rev. 1
T
rva1(Max)
T
T
rva3(Min)
rva3(Max)
Figure
20-8(4).
T
rv6(Min)
(1) Invalid Active
Bit
(2) Valid Active
Logic One
(3) Valid Active
Logic Zero
(4) Valid SOF
Symbol
20-8(1).
and T
, the current bit
rva2(Min)
rva2(Max)
and T
, the current bit
rva1(Min)
rva1(Max)
and T
, the current symbol
rva3(Min)
rva3(Max)
(2) Valid BREAK
Symbol
Freescale Semiconductor
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