PXN20RM Datasheet, PDF (765/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Figure 26-151.
Interrupt Sources
n = # Message Buffers
MBCCSRn[MBIF]
MBCCSRn[MTD]
n
n
&
OR
Transmit
n
&
OR
Receive
CHIER[15:0]
OR
PIFR0[15:0]
PIFR1[15:0]
OR
FlexRay Communication Controller (FlexRAY)
Combined Interrupt Flags
CIFR[TBIF]
CIFR[RBIF]
CIFR[CHIF]
CIFR[PRIF]
GIFER[FAFAIF]
GIFER[FAFBIF]
GIFER[WUPIF]
OR
CIFR[MIF]
CIFR[FAFAIF]
CIFR[FAFBIF]
CIFR[WUPIF]
Figure 26-152. Scheme of combined interrupt flags
26.6.21 Lower Bit Rate Support
The controller supports a number of lower bit rates on the FlexRay bus channels. The lower bit rates are
implemented by modifying the duration of the microtick pdMicrotick, the number of samples per microtick
pSamplesPerMicrotick, the number of samples per bit cSamplesPerBit, and the strobe offset cStrobeOffset.
The application configures the FlexRay channel bit rate by setting the BITRATE field in the Module
Configuration Register (MCR). The protocol values are set internally. The available bit rates, the related
BITRATE field configuration settings and related protocol parameter values are shown in Table 26-117.
Freescale Semiconductor
PXN20 Microcontroller Reference Manual, Rev. 1
26-151