NXP Semiconductors MPC5644A, Reference Manual, Page: 1468 / 1735

FlexRay Communication Controller (FlexRay)
MPC5644A Microcontroller Reference Manual, Rev. 6
1468 Freescale Semiconductor
33.5.2.13 Protocol Interrupt Flag Register 0 (FR_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
FA
T
L
_
IF
INT
L
_IF
ILCF_IF
CSA_IF
MRC_IF MO
C_I
F
C
C
L_IF
MXS_IF
MTX_IF
L
T
XB_IF
L
T
XA_IF
TBVB_IF
TBV
A
_I
F
TI
2_
IF
TI
1_
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 33-13. Protocol Interrupt Flag Register 0 (FR_PIFR0)
Table 33-18. FR_PIFR0 field description
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 (FR_PCR14) and Protocol Configuration Register 15 (FR_PCR15) when the
CONFIG_COMPLETE command was sent by the application via the Protocol Operation Control
Register (FR_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
(FR_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