NXP Semiconductors PXN2020 - 26.5.2.57 Receive FIFO B Read Index Register (RFBRIR); 26.5.2.58 Receive FIFO Fill Level and POP Count Register (RFFLPCR)

FlexRay Communication Controller (FlexRAY)
PXN20 Microcontroller Reference Manual, Rev. 1
26-60 Freescale Semiconductor
NOTE
If the FIFO is empty, the RDIDX field points to an physical message buffer
with invalid content.
26.5.2.57 Receive FIFO B Read Index Register (RFBRIR)
This register provides the message buffer header index of the next available FIFO B entry that the
application can read.
NOTE
If the FIFO is empty, the RDIDX field points to an physical message buffer
with invalid content.
26.5.2.58 Receive FIFO Fill Level and POP Count Register (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.
Base + 0x008E
0123456789101112131415
R000000 RDIDX
W
Reset0000000000000000
Figure 26-58. Receive FIFO B Read Index Register (RFBRIR)
Table 26-67. RFBRIR Field Descriptions
Field Description
RDIDX Read Index — This field provides the message buffer header index of the next available FIFO message buffer
that the application can read.
Base + 0x00EE
0123456789101112131415
RFLB FLA
WPCB PCA
Reset0000000000000000
Figure 26-59. Receive FIFO Fill Level and POP Count Register (RFFLPCR)
Table 26-68. RFFLPCR Field Descriptions
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.