XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 499

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

MC68HC908AZ60A — Rev 2.0
MOTOROLA
Normalization Bit (NB)
Break Signal (BREAK)
Start-of-Frame Symbol (SOF)
End-of-Data Symbol (EOD)
End-of-Frame Symbol (EOF)
Inter-Frame Separation Symbol (IFS)
Idle
The NB symbol has the same property as a logic 1 or a logic 0. It is
only used in IFR message responses.
The BREAK signal is defined as a passive-to-active transition
followed by an active period of at least 240 µs (See
The SOF symbol is defined as passive-to-active transition followed by
an active period 200 µs in length (See
the data bytes which follow the SOF symbol to begin with a passive
bit, regardless of whether it is a logic 1 or a logic 0.
The EOD symbol is defined as an active-to-passive transition
followed by a passive period 200 µs in length (See
The EOF symbol is defined as an active-to-passive transition followed
by a passive period 280 µs in length (See
byte is transmitted after an EOD symbol is transmitted, after another
80 µs the EOD becomes an EOF, indicating completion of the
message.
The IFS symbol is defined as a passive period 300 µs in length. The
20-µs IFS symbol contains no transition, since when used it always
appends to an EOF symbol (See
An idle is defined as a passive period greater than 300 µs in length.
Byte Data Link Controller (BDLC)
Figure
Figure
Byte Data Link Controller (BDLC)
27-6(g)).
Figure
27-6(d)). This allows
27-6(f)). If no IFR
BDLC MUX Interface
Figure
Figure
Technical Data
27-6(e)).
27-6(c)).
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