NXP Semiconductors MPC5644A, Reference Manual, Page: 1508 / 1735

FlexRay Communication Controller (FlexRay)
MPC5644A Microcontroller Reference Manual, Rev. 6
1508 Freescale Semiconductor
NOTE
If the FIFO is empty, the RDIDX field points to an physical message buffer
with invalid content.
33.5.2.60 Receive FIFO Fill Level and POP Count Register (FR_RFFLPCR)
This register provides the current fill level of the two receiver FIFOs and is used to pop a number of entries
from the FIFOs.
NOTE
If the pop count value PCA/PCB is greater than the current FIFO fill level
FLB/FLA, than the FIFO is empty after the update. No notification is given
that not the required number of entries was removed.
33.5.2.61 Receive FIFO Message ID Acceptance Filter Value Register
(FR_RFMIDAFVR)
This register defines the filter value for the message ID acceptance filter of the selected FIFO. For details
on message ID filtering see
Section 33.6.9.9, FIFO filtering” .
Base + 0x00EE
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R FLB FLA
W PCB PCA
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 33-61. Receive FIFO Fill Level and POP Count Register (FR_RFFLPCR)
Table 33-69. FR_RFFLPCR field description
Field Description
FLB Fill Level FIFO B — This field provides the current number of entries in the FIFO B.
FLA Fill Level FIFO A — This field provides the current number of entries in the FIFO A.
PCB Pop Count FIFO B — This field defines the number of entries to be removed from FIFO B.
PCA Pop Count FIFO A — This field defines the number of entries to be removed from FIFO A.
Base + 0x0090 Write: POC:config
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R
MIDAFVAL
A
/MIDAFVAL
B
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 33-62. Receive FIFO Message ID Acceptance Filter Value Register (FR_RFMIDAFVR)