mfr4200 Freescale Semiconductor, Inc, mfr4200 Datasheet - Page 110

• Manufacturer Part Number: mfr4200
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

MFR4200 FlexRay Communication Controller
operation has the higher priority. If the host tries to clear a set error flag in the CHIER register, while the
CC at the same time sets this bit, the error flag will remain set. A hard reset clears the register.
FLE — Frame Lost Error
This error occurs if the host has locked a receive message buffer, and two semantically valid frames for
that buffer are received during this locked time. The first frame will be lost.
1 – Frame lost error detected.
0 – No frame lost error detected.
IRE — Illegal Reconfiguration Error
This error appears if the host tries to reconfigure a dynamic transmit message buffer to a static one. The
reconfiguration, in that case, is ignored by the CC.
1 – Illegal reconfiguration error detected.
0 – No illegal reconfiguration error detected.
BB — Buffer Busy
This bit is set if the host tries to lock a message buffer that is locked by the CC for internal operations. The
CC, in that case, does not grant access to the message buffer through the locking mechanism.
1 – Buffer busy detected.
0 – No buffer busy detected.
Buffer Locking Errors:
CCPBLE — CC Part Buffer of a Double Transmit Message Buffer Lock Error
This error is raised if the host tries to lock a CC part buffer of a double transmit message buffer. The CC,
in that case, does not grant access to the CC part buffer of a double transmit message buffer through the
locking mechanism.
1 – CCPBLE detected.
0 – No CCPBLE detected.
RBLE — Receive Message Buffers Locking Error
This error appears if the host tries to lock more than 1 receive message buffer. The CC in that case does
not grant access to the buffer through the locking mechanism.
1 – RBLE detected.
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When any error is processed by the CC, and indicated in the CHIER register,
the CC raises an interrupt, if configured to do so by means of the ISR0 and
IER0 bits, and continues operation without changing state.
MFR4200 Data Sheet, Rev. 0
NOTE
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