FlexRay Module (FLEXRAYV4)
MFR4310 Reference Manual, Rev. 2
Freescale Semiconductor
197
•
(SSCCRn.VFR | SSCCRn.SYF | SSCCRn.NUF | SSCCRn.SUF) // count on frame condition
= 1;
and
•
((~SSCCRn.VFR |
vSS!ValidFrame
) & // valid frame restriction
(~SSCCRn.SYF |
vRF!Header!SyFIndicator
) & // sync frame indicator restriction
(~SSCCRn.NUF | ~
vRF!Header!NFIndicator
) & // null frame indicator restriction
(~SSCCRn.SUF |
vRF!Header!SuFIndicator
)) // startup frame indicator restriction
= 1;
NOTE
The indicator bits SYF, NUF, and SUF are valid only when a valid frame
was received. Thus it is required to set the VFR always, when count on
frame condition is used.
2. slot related condition:
•
((SSCCRn.STATUSMASK[3] &
vSS!ContentError
) | // increment on content error
(SSCCRn.STATUSMASK[2] &
vSS!SyntaxError
) | // increment on syntax error
(SSCCRn.STATUSMASK[1] &
vSS!BViolation
) | // increment on boundary violation
(SSCCRn.STATUSMASK[0] &
vSS!TxConflict
)) // increment on transmission conflict
= 1;
If the slot status counter is in single cycle mode, i.e. SSCCRn.MCY equals 0, the internal slot status
counter SSCRn_INT is reset at each cycle start. If the slot status counter is in the multicycle mode, i.e.
SSCCRn.MCY equals 1, the counter is not reset and incremented, until the maximum value is reached.
3.4.18.5
Message Buffer Slot Status Field
Each individual message buffer and each FIFO message buffer provides a slot status field, which provides
the information shown in
for the static/dynamic slot. The update conditions for the slot status
field depend on the message buffer type. Refer to the Message Buffer Update Sections in
“Individual Message Buffer Functional Description
”.
3.4.19
Interrupt Support
The FlexRay module provides 172 individual interrupt sources and five combined interrupt sources.
3.4.19.1
Individual Interrupt Sources
3.4.19.1.1
Message Buffer Interrupts
The FlexRay module provides 128 message buffer interrupt sources.
Each individual message buffer provides an interrupt flag MBCCSn.MBIF and an interrupt enable bit
MBCCSn.MBIE. The FlexRay module sets the interrupt flag when the slot status of the message buffer
was updated. If the interrupt enable bit is asserted, an interrupt request is generated.
Summary of Contents for FlexRay MFR4310
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Page 3: ...MFR4310 Reference Manual MFR4310RM Rev 2 03 2008...
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Page 24: ...MFR4310 Reference Manual Rev 2 24 Freescale Semiconductor Table Number Title Page...
Page 28: ...Introduction MFR4310 Reference Manual Rev 2 28 Freescale Semiconductor...
Page 58: ...Device Overview MFR4310 Reference Manual Rev 2 58 Freescale Semiconductor...
Page 234: ...Clocks and Reset Generator CRG MFR4310 Reference Manual Rev 2 234 Freescale Semiconductor...
Page 260: ...Package Information MFR4310 Reference Manual Rev 2 260 Freescale Semiconductor...
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