mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 184

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

FlexRay Module (FLEXRAYV2)
A received valid frame in the dynamic segment with the payload preamble indicator bit PPI set to ‘1’ and
with the message ID MID (the first two bytes of the payload) will pass the RX FIFO Message ID
Acceptance Filter if
The RX FIFO Message ID Acceptance Filter can be configured to accept all frames by setting
Using the settings above,
3.4.10
This section describes the two FlexRay channel device modes that are supported by the FlexRay module.
3.4.10.1
In the dual channel device mode, both FlexRay ports are connected to physical FlexRay bus lines. The
FlexRay port consisting of RXD_BG1, TXD_BG1, and TXEN1# is connected to the physical bus channel
A and the FlexRay port consisting of RXD_BG2, TXD_BG2, and TXEN1# is connected to the physical
bus channel B. The dual channel system is shown in
3.4.10.2
The single channel device mode supports devices that have only one FlexRay port available. This FlexRay
port consists of the signals RXD_BG1, TXD_BG1, and TXEN1# and can be connected to either the
physical bus channel A (shown in
184
FlexRay Module
•
CHI
MID & RFMIDAFMR.MIDAFMSK = RFMIDAFVR.MIDAFVAL & RFMIDAFMR.MIDAFMSK
RFMIDAFMR.MIDAFMSK:= 0x000
reg(A)
reg(B)
cfg(A)
cfg(B)
Channel Device Modes
Dual Channel Device Mode
Single Channel Device Mode
Equation 3-14
Equation 3-14
PE
cCrcInit[A]
cCrcInit[B]
channel 0
channel 1
Figure 3-130. Dual Channel Device Mode
Figure
is fulfilled.
MFR4300 Data Sheet, Rev. 3
is always fulfilled and all frames will pass.
3-131) or the physical bus channel B (shown in
RXD_BG1
TXD_BG1
TXEN1#
RXD_BG2
TXD_BG2
TXEN2#
Figure
3-130.
FlexRay Bus Driver
FlexRay Bus Driver
Channel A
Channel B
FlexRay Channel
FlexRay Channel
Freescale Semiconductor
Figure
Eqn. 3-14
3-132).
A
B