NXP Semiconductors PXN2020, Reference Manual, Page: 637 / 1376

FlexRay Communication Controller (FlexRAY)
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor 26-23
26.5.2.11 Protocol Interrupt Flag Register 0 (PIFR0)
The register holds one set of the protocol-related individual interrupt flags.
Base + 0x0018 Write: Normal Mode
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R FATL
_IF
INTL
_IF
ILCF
_IF
CSA
_IF
MRC
_IF
MOC
_IF
CCL
_IF
MXS
_IF
MTX
_IF
LTXB
_IF
LTXA
_IF
TBVB
_IF
TBVA
_IF
TI2
_IF TI1
_IF CYS
_IF
W w1c w1c w1c w1c w1c w1c w1c w1c w1c w1c w1c w1c w1c w1c w1c w1c
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 26-11. Protocol Interrupt Flag Register 0 (PIFR0)
Table 26-17. PIFR0 Field Descriptions
Field Description
FATL_IF Fatal Protocol Error Interrupt Flag — This flag is set when the protocol engine has detected a fatal protocol
error. In this case, the protocol engine goes into the
POC:halt state immediately. The fatal protocol errors are:
1) pLatestTx violation, as described in the MAC process of the FlexRay protocol
2) transmission across slot boundary violation, as described in the FSP process of the FlexRay protocol
0 No such event.
1 Fatal protocol error detected.
INTL_IF Internal Protocol Error Interrupt Flag — This flag is set when the protocol engine has detected an internal
protocol error. In this case, the protocol engine goes into the
POC:halt state immediately. An internal protocol
error occurs when the protocol engine has not finished a calculation and a new calculation is requested. This
can be caused by a hardware error.
0 No such event.
1 Internal protocol error detected.
ILCF_IF Illegal Protocol Configuration Interrupt Flag — This flag is set when the protocol engine has detected an
illegal protocol configuration parameter setting. In this case, the protocol engine goes into the
POC:halt state
immediately.
The protocol engine checks the listen_timeout value programmed into the Protocol Configuration Register 14
(PCR14) and Protocol Configuration Register 15 (PCR15) when the CONFIG_COMPLETE command was sent
by the application via the Protocol Operation Control Register (POCR) . If the value of listen_timeout is equal to
zero, the protocol configuration setting is considered as illegal.
0 No such event.
1 Illegal protocol configuration detected.
CSA_IF Cold Start Abort Interrupt Flag — This flag is set when the configured number of allowed cold start attempts
is reached and none of these attempts was successful. The number of allowed cold start attempts is configured
by the coldstart_attempts field in the
Protocol Configuration Register 3 (PCR3) .
0 No such event.
1 Cold start aborted and no more coldstart attempts allowed.
MRC_IF Missing Rate Correction Interrupt Flag — This flag is set when an insufficient number of measurements is
available for rate correction at the end of the communication cycle.
0 No such event.
1 Insufficient number of measurements for rate correction detected.
MOC_IF Missing Offset Correction Interrupt Flag — This flag is set when an insufficient number of measurements is
available for offset correction. This is related to the MISSING_TERM event in the CSP process for offset
correction in the FlexRay protocol.
0 No such event.
1 Insufficient number of measurements for offset correction detected.