PXS20RM Datasheet, PDF (880/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

FlexRay Communication Controller
Interrupt Sources
FR_PIFR0[15:0]
16
FR_PIFR1[9:0]
10
OR
FR_CHIERFR[15:0] ¹⁶
OR
PE
RX FIFO A
RX FIFO B
FR_MBCCSRn[MBIF]
n
FR_MBCCSRn[MTD] ⁿ
n
&
OR
RXBUF
n
&
OR
TXBUF
FR_CIFR
FR_CIFR[PRIF]
FR_CIFR[CHIF]
FR_CIFR[WUPIF]
FR_CIFR[FAFAIF]
FR_CIFR[FAFBIF]
FR_CIFR[RBIF]
FR_CIFR[TBIF]
FR_CIFR[MIF]
OR
Figure 26-162. Scheme of FR_CIFR flags generation
26.6.21 Lower Bit Rate Support
The CC 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 (FR_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 26-127.
26-168
PXS20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor