Datasheet

Byte Data Link Controller Module
Functional Description
MC9S12DP256 — Revision 1.1
Byte Data Link Controller Module
Table 114 BDLC J1850 Error Summary
Error Condition BDLC Function
Transmission Error
BDLC will immediately cease transmitting. Further
transmission and reception will be disabled until a valid
EOF symbol is detected. The symbol invalid or out of range
flag will be set and interrupt generated if enabled.
Cyclical Redundancy
Check (CRC) Error
CRC error flag set and interrupt generated if enabled.
Symbol Error
The symbol invalid or out of range flag will be set and
interrupt generated if enabled. Transmission and reception
will be disabled until a valid EOF symbol is detected.
Framing Error
The symbol invalid or out of range flag will be set and
interrupt generated if enabled. Transmission and reception
will be disabled until a valid EOF symbol is detected.
Bus short to V
DD
.
The BDLC will not transmit until short is corrected and a
valid EOF is detected. Depending upon when short occurs
and is corrected, this error condition may set the symbol
invalid or out of range, crc error, or loss of arbitration flags.
Bus short to GND.
Short will be seen as an idle bus by BDLC. If a
transmission attempt is made before short is corrected, the
symbol invalid or out of range flag will be set and interrupt
generated if enabled. Another transmission can be initiated
as soon as short is corrected.
BREAK symbol
reception
If doing so, the BDLC will immediately cease transmitting.
Symbol invalid or out of range flag set and interrupt
generated if enabled.Transmission and reception will be
disabled until a valid EOF symbol is detected.
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
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