mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 181

• Manufacturer Part Number: mfr4300
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

FlexRay Module (FLEXRAYV2)
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 will 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 will be appended to
the FIFO. The FIFO filter path is depicted in
Figure
3-129.
MFR4300 Data Sheet, Rev. 3
Freescale Semiconductor
181