FlexRay Module (FLEXRAYV4)
MFR4310 Reference Manual, Rev. 2
Freescale Semiconductor 181
FNEBIF. This clears the interrupt flag and updates the RDIDX field in the Receive FIFO A Read Index
Register (RFARIR) or Receive FIFO B Read Index Register (RFBRIR), respectively.When the RDIDX
value has reached the last message buffer header field that belongs to the fifo, it wraps around to the index
of the first message buffer header field that belongs to the fifo. This value is provided by the SIDX field
in the Receive FIFO Start Index Register (RFSIR).
3.4.9.5 Receive FIFO filtering
The receive FIFO filtering is activated after all enabled individual receive message buffers have been
searched without success for a message buffer to receive the current frame.
The FlexRay module provides three sets of FIFO filters. The FIFO filters are applied to valid non-null
frames only. The FIFO does not receive invalid or null-frames. For each FIFO filter, the pass criteria is
specified in the related section given below. Only frames that have passed all filters are appended to the
FIFO. The FIFO filter path is depicted in Figure 3-128.
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