mc68hc912bc32 Freescale Semiconductor, Inc, mc68hc912bc32 Datasheet - Page 226

• Manufacturer Part Number: mc68hc912bc32
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Byte Data Link Communications (BDLC)
15.7.4.7 Invalid Active Bit
In
between the passive-to-active transition beginning the current data bit (or symbol) and A, the current bit
would be invalid.
15.7.4.8 Valid Active Logic 1
In
between A and B, the current bit would be considered a logic 1.
15.7.4.9 Valid Active Logic 0
In
between B and C, the current bit would be considered a logic 0.
15.7.4.10 Valid SOF Symbol
In
between C and D, the current symbol would be considered a valid SOF symbol.
226
Figure
Figure
Figure
Figure
15-8(1), if the active-to-passive received transition beginning the next data bit (or symbol) occurs
15-8(2), if the active-to-passive received transition beginning the next data bit (or symbol) occurs
15-8(3), if the active-to-passive received transition beginning the next data bit (or symbol) occurs
15-8(4), if the active-to-passive received transition beginning the next data bit (or symbol) occurs
PASSIVE
PASSIVE
PASSIVE
PASSIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
Figure 15-8. J1850 VPW Received Active Symbol Times
64 µs
A
A
M68HC12B Family Data Sheet, Rev. 9.1
128 µs
200 µs
B
B
C
C
D
(1) INVALID ACTIVE BIT
(2) VALID ACTIVE LOGIC 1
(3) VALID ACTIVE LOGIC 0
(4) VALID SOF SYMBOL
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