PXN20RM Datasheet, PDF (674/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

FlexRay Communication Controller (FlexRAY)
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)
Base + 0x008E
0
1
R0
0
W
Reset 0
0
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
0
0
0
RDIDX
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 26-58. 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.
Table 26-67. RFBRIR Field Descriptions
Field
RDIDX
Description
Read Index — This field provides the message buffer header index of the next available FIFO message buffer
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)
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 26-59. 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.
Table 26-68. RFFLPCR Field Descriptions
Field
FLB
FLA
PCB
PCA
Description
Fill Level FIFO B — This field provides the current number of entries in the FIFO B.
Fill Level FIFO A— This field provides the current number of entries in the FIFO A.
Pop Count FIFO B — This field defines the number of entries to be removed from FIFO B.
Pop Count FIFO A— This field defines the number of entries to be removed from FIFO A.
26-60
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor