MFR4300 Datasheet, PDF (131/266 Pages) Freescale Semiconductor, Inc – FlexRay Communication Controllers

FlexRay Module (FLEXRAYV2)
.
Table 3-77. Channel Assignment Description
CHA CHB
Transmit Message Buffer
static segment
dynamic segment
Receive Message Buffer
static segment
dynamic segment
1
1 transmit on both channel A transmit on channel A only store first valid frame
store first valid frame
and channel B
received on either
received on channel A,
channel A or channel B ignore channel B
0
1 transmit on channel B
transmit on channel B
store first valid frame
store first valid frame
received on channel B received on channel B
1
0 transmit on channel A
transmit on channel A
store first valid frame
store first valid frame
received on channel A received on channel A
0
0 no frame transmission
no frame transmission
no frame stored
no frame stored
NOTE
If at least one message buffer assigned to a certain slot is assigned to both
channels, then all message buffers assigned to this slot have to be assigned
to both channels. Otherwise, the message buffer configuration is illegal and
the result of the message buffer search is not defined.
3.3.2.66 Message Buffer Frame ID Registers (MBFIDRn)
0x0104, 0x010C,..., 0x04FC
Write: POC:config or MB_DIS
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R0
0
0
0
0
FID
W
Reset 0
0
0
0
0
bits located in physical memory, not affected by reset, no reset value
Figure 3-95. Message Buffer Frame ID Registers (MBFIDRn)
Field
10–0
FID
Table 3-78. MBFIDRn Field Descriptions
Description
Frame ID — The semantic of this field depends on the message buffer transfer type.
For receive message buffers it is used as a filter value to determine whether or not the message buffer is used
for reception of a message received in a slot with the slot ID equal to FID.
For a transmit message buffer it is used to determine the slot in which the message in this message buffer will
be transmitted.
MFR4300 Data Sheet, Rev. 1
Freescale Semiconductor
131