mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 114

• Manufacturer Part Number: mfr4300
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

FlexRay Module (FLEXRAYV2)
3.3.2.52
This register defines the structure of the selected receive FIFO, i.e. the number of entries and the size of
each entry.
3.3.2.53
This register provides the message buffer header index of the next available entry of receive FIFO A that
the application can read.
114
0x008A
0x008C
Reset
Reset
FIFO_DEPTH
ENTRY_SIZE
RDIDX
W
W
Field
SIDX
Field
R
R
Field
15–8
7–0
7–0
6–0
15
15
0
0
0
Start Index — This field defines the number of the message buffer header field of the first message buffer of the
selected receive FIFO. The FlexRay module uses the value of the SIDX field to determine the physical location
of the receiver FIFO’s first message buffer header field.
Read Index — This field provides the message buffer header index of the next available receive FIFO message
buffer that the application can read. The FlexRay module increments this index when the application writes to
the FNEAIF flag in the
message buffer header index if the end of the FIFO was reached.
Receive FIFO Depth and Size Register (RFDSR)
Receive FIFO A Read Index Register (RFARIR)
FIFO Depth — This field defines the depth of the selected receive FIFO, i.e. the number of entries.
Entry Size — This field defines the size of the frame data sections for the selected receive FIFO in 2 byte
entities.
14
14
0
0
0
13
13
0
0
0
Figure 3-51. Receive FIFO Depth and Size Register (RFDSR)
Figure 3-52. Receive FIFO A Read Index Register (RFARIR)
FIFO_DEPTH
12
12
0
0
0
Global Interrupt Flag and Enable Register
11
11
0
0
0
Table 3-63. RFARIR Field Descriptions
Table 3-62. RFDSR Field Descriptions
Table 3-61. RFSIR Field Descriptions
10
10
0
0
0
MFR4300 Data Sheet, Rev. 3
0
0
0
9
9
0
0
0
8
8
Description
Description
Description
0
0
0
7
7
6
0
6
0
(GIFER). The index wraps back to the first
0
0
5
5
0
0
4
4
RDIDX
ENTRY_SIZE
0
0
3
3
Freescale Semiconductor
0
0
2
2
Write:
POC:config
1
0
1
0
0
0
0
0