NXP Semiconductors MPC5644A, Reference Manual, Page: 1476 / 1735

FlexRay Communication Controller (FlexRay)
MPC5644A Microcontroller Reference Manual, Rev. 6
1476 Freescale Semiconductor
33.5.2.18 Message Buffer Interrupt Vector Register (FR_MBIVEC)
This register indicates the lowest numbered receive message buffer and the lowest numbered transmit
message buffer that have their interrupt status flag MBIF and interrupt enable MBIE bits asserted. This
means that message buffers with lower message buffer numbers have higher priority.
NML_EF Network Management Length Error Flag — This flag is set if the payload length written into the
header structure of a receive message buffer assigned to the static segment is less than the configured
length of the Network Management Vector as configured in the
Network Management Vector Length
Register (FR_NMVLR) . In this case the received part of the Network Management Vector will be used
to update the Network Management Vector.
0 No such error occurred
1 Network management length error occurred
NMF_EF Network Management Frame Error Flag — This flag is set if a received message in the static
segment with a Preamble Indicator flag PP asserted has its Null Frame indicator flag NF asserted as
well. In this case, the Global Network Management Registers (see
Network Management Vector
Registers (FR_NMVR0–FR_NMVR5) ) are not updated.
0 No such error occurred
1 Network management frame error occurred
ILSA_EF Illegal System Bus Address Error Flag — This flag is set if the external system bus subsystem has
detected an access to an illegal system bus address from the CC (see Section 33.6.19.1.1, System
bus illegal address access ”).
0 No such event
1 Illegal system bus address accessed
Base + 0x0022
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R 0 TBIVEC 0 RBIVEC
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 33-18. Message Buffer Interrupt Vector Register (FR_MBIVEC)
Table 33-23. FR_MBIVEC field description
Field Description
TBIVEC Transmit Buffer Interrupt Vector — This field provides the number of the lowest numbered enabled
transmit message buffer that has its interrupt status flag MBIF and its interrupt enable bit MBIE set. If
there is no transmit message buffer with the interrupt status flag MBIF and the interrupt enable MBIE
bits asserted, the value in this field is set to 0.
RBIVEC Receive Buffer Interrupt Vector — This field provides the message buffer number of the lowest
numbered receive message buffer which has its interrupt flag MBIF and its interrupt enable bit MBIE
asserted. If there is no receive message buffer with the interrupt status flag MBIF and the interrupt
enable MBIE bits asserted, the value in this field is set to 0.
Table 33-22. FR_CHIERFR field description (continued)
Field Description