NXP Semiconductors MPC5644A, Reference Manual, Page: 1474 / 1735

FlexRay Communication Controller (FlexRay)
MPC5644A Microcontroller Reference Manual, Rev. 6
1474 Freescale Semiconductor
33.5.2.17 CHI Error Flag Register (FR_CHIERFR)
This register holds the CHI related error flags. The interrupt generation for each of these error flags is
controlled by the CHI interrupt enable bit CHIE in the
Global Interrupt Flag and Enable Register
(FR_GIFER) .
Base + 0x0020 Write: Normal Mode
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R
F
R
LB_EF
F
R
LA_EF
PCMI_EF
FO
VB_
E
F
FO
V
A
_
E
F
MBS_EF
MBU_EF
LCK_EF DBL_EF
SBCF_EF
1
1
The FlexRay controller should be stopped via a FREEZE or HALT command and subsequently restarted when any
of the error flags CHIERFR[SBCF_EF] or CHIERFR[ILSA_EF] is set.
FI
D_EF
DPL_EF SPL_EF
NM
L_
EF
NMF_EF
ILSA_EF
1
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 33-17. CHI Error Flag Register (FR_CHIERFR)
Table 33-22. FR_CHIERFR field description
Field Description
FRLB_EF Frame Lost Channel B Error Flag — This flag is set if a complete frame was received on channel B
but could not be stored in the selected individual message buffer because this message buffer is
currently locked by the application. In this case, the frame and the related slot status information are
lost.
0 No such event
1 Frame lost on channel B detected
FRLA_EF Frame Lost Channel A Error Flag — This flag is set if a complete frame was received on channel A
but could not be stored in the selected individual message buffer because this message buffer is
currently locked by the application. In this case, the frame and the related slot status information are
lost.
0 No such error
1 Frame lost on channel A detected
PCMI_EF Protocol Command Ignored Error Flag — This flag is set if the application has issued a POC
command by writing to the POCCMD field in the Protocol Operation Control Register (FR_POCR)
while the BSY flag is equal to 1. In this case the command is ignored by the CC and is lost.
0 No such error
1 POC command ignored
FOVB_EF Receive FIFO Overrun Channel B Error Flag — This flag is set when an overrun of the FIFO for
channel B occurred. This error occurs if a semantically valid frame was received on channel B and
matches the all criteria to be appended to the FIFO for channel B but the FIFO is full. In this case, the
received frame and its related slot status information is lost.
0 No such error
1 FIFO overrun on channel B has been detected
FOVA_EF Receive FIFO Overrun Channel A Error Flag — This flag is set when an overrun of the FIFO for
channel A occurred. This error occurs if a semantically valid frame was received on channel A and
matches the all criteria to be appended to the FIFO for channel A but the FIFO is full. In this case, the
received frame and its related slot status information is lost.
0 No such error
1 FIFO overrun on channel B has been detected