Freescale Semiconductor FlexRay MFR4310 - Figure 3-130. Single Channel Device Mode (Channel A); Figure 3-131. Single Channel Device Mode (Channel B)

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FlexRay Module (FLEXRAYV4)

MFR4310 Reference Manual, Rev. 2

Freescale Semiconductor 185

If the device is configured as a single channel device by setting MCR.SCD to 1, only the internal channel

A and the FlexRay Port A is used. Depending on the setting of MCR.CHA and MCR.CHB, the internal

channel A behaves as a FlexRay Channel A or FlexRay Channel B. The bit MCR.CHA must be set, if the

FlexRay Port A is connected to a FlexRay Channel A. The bit MCR.CHB must be set if the FlexRay Port

A is connected to a FlexRay Channel B. The two FlexRay channels differ only in the initial value for the

frame CRC cCrcInit. For a single channel device, the application can access and configure only the

registers related to internal channel A.

Figure 3-130. Single Channel Device Mode (Channel A)

Figure 3-131. Single Channel Device Mode (Channel B)

CHI

cfg(A)

reg(A)

cCrcInit[A]

cCrcInit[B]

cfg(B)

reg(B)

channel A

channel B

FlexRay Channel A

FlexRay Bus Driver

Channel A

RXD_BG1

TXD_BG1

TXEN1#

RXD_BG2

TXD_BG2

TXEN2#

FlexRay Module

CHI