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Chapter 13 FlexRay Communication Controller (FLEXRAY)
MC9S12XF - Family Reference Manual, Rev.1.19
Freescale Semiconductor
501
This register provides ve combined interrupt ags and a copy of three individual interrupt ags. The
combined interrupt ags are the result of a binary OR of the values of other interrupt ags regardless of
the state of the interrupt enable bits. The generation scheme for the combined interrupt ags is depicted in
Figure 13-146. The individual interrupt ags WUPIF, FNEBIF, and FNEAIF are copies of corresponding
application interrupt ag check. To clear the individual interrupt ags, the application must use the
GlobalNOTE
The meanings of the combined status bits MIF, PRIF, CHIF, RBIF, and
Table 13-37. CIFRR Field Descriptions
Field
Description
7
MIF
Module Interrupt Flag — This ag is set if there is at least one interrupt source that has its interrupt ag
asserted.
0 No interrupt source has its interrupt ag asserted
1 At least one interrupt source has its interrupt ag asserted
6
PRIF
Protocol Interrupt Flag — This ag is set if at least one of the individual protocol interrupt ags in the
Protocol 0 All individual protocol interrupt ags are equal to 0
1 At least one of the individual protocol interrupt ags is equal to 1
5
CHIF
0 All CHI error ags are equal to 0
1 At least one CHI error ag is equal to 1
4
WUPIF
Wakeup Interrupt Flag — Provides the same value as GIFER[WUPIF]
3
FNEBIF
Receive FIFO channel B Not Empty Interrupt Flag — Provides the same value as GIFER[FNEBI]
2
FNEAIF
Receive FIFO channel A Not Empty Interrupt Flag — Provides the same value as GIFER[FNEAIF]
1
RBIF
Receive Message Buffer Interrupt Flag — This ag is set if for at least one of the individual receive message
0 None of the individual receive message buffers has the MBIF ag asserted.
1 At least one individual receive message buffers has the MBIF ag asserted.
0
TBIF
Transmit Message Buffer Interrupt Flag — This ag is set if for at least one of the individual single or double
transmit message buffers (MBCCSRn[MTD] = 1) the interrupt ag MBIF in the corresponding
Message Buffer0 None of the individual transmit message buffers has the MBIF ag asserted.
1 At least one individual transmit message buffers has the MBIF ag asserted.