FlexRay Module (FLEXRAYV4)
MFR4310 Reference Manual, Rev. 2
Freescale Semiconductor 133
NOTE
If at least one message buffer assigned to a certain slot is assigned to both
channels, then all message buffers assigned to this slot have to be assigned
to both channels. Otherwise, the message buffer configuration is illegal and
the result of the message buffer search is not defined.
3.3.2.65 Message Buffer Frame ID Registers (MBFIDRn)
3.3.2.66 Message Buffer Index Registers (MBIDXRn)
0x0104 (MBFIDR0)
0x010C (MBFIDR1)
...
0x04FC (MBFIDR127)
Write: POC:config or MB_DIS
1514131211109876543210
R00000
FID
W
Reset00000 bits located in physical memory, not affected by reset, no reset value
Figure 3-94. Message Buffer Frame ID Registers (MBFIDRn)
Table 3-78. MBFIDRn Field Descriptions
Field Description
10–0
FID
Frame ID — The semantic of this field depends on the message buffer transfer type.
• Receive Message Buffer: This field is used as a filter value to determine if the message buffer is used for
reception of a message received in a slot with the slot ID equal to FID.
• Transmit Message Buffer: This field is used to determine the slot in which the message in this message buffer
should be transmitted.
0x0106 (MBIDXR0)
0x010E (MBIDXR1)
...
0x04FE (MBIDXR127)
Write: POC:config or MB_DIS
1514131211109876543210
R00000000
MBIDX
W
Reset00000000- -------
Figure 3-95. Message Buffer Index Registers (MBIDXRn)
Table 3-79. MBIDXRn Field Descriptions
Field Description
7–0
MBIDX
Message Buffer Index — This field provides the index of the message buffer header field of the physical
message buffer that is currently associated with this message buffer.
The application writes the index of the initially associated message buffer header field into this register. The
FlexRay module updates this register after frame reception or transmission.
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