FlexRay Module (FLEXRAYV4)
MFR4310 Reference Manual, Rev. 2
Freescale Semiconductor 149
3.4.5.3 Message Buffer Data Field Description
The message buffer data field is used to store the frame payload data, or a part of it, of the frame to be
transmitted to or received from the FlexRay bus. The minimum required length of this field depends on
the message buffer type that the physical message buffer is assigned to and is given in Table 3-86. The
structure of the message buffer data field is given in Figure 3-108.
9
BVB
Boundary Violation on Channel B — protocol related variable: vSS!BViolation channel B
0 vSS!BViolation = 0
1 vSS!BViolation = 1
8
TCB
Transmission Conflict on Channel B — protocol related variable: vSS!TxConflict channel B
0 vSS!TxConflict = 0
1 vSS!TxConflict = 1
7
VFA
Valid Frame on Channel A — protocol related variable: vSS!ValidFrame channel A
0 vSS!ValidFrame = 0
1 vSS!ValidFrame = 1
6
SYA
Sync Frame Indicator Channel A — protocol related variable: vRF!Header!SyFIndicator channel A
0 vRF!Header!SyFIndicator = 0
1 vRF!Header!SyFIndicator = 1
5
NFA
Null Frame Indicator Channel A — protocol related variable: vRF!Header!NFIndicator channel A
0 vRF!Header!NFIndicator = 0
1 vRF!Header!NFIndicator = 1
4
SUA
Startup Frame Indicator Channel A — protocol related variable: vRF!Header!SuFIndicator channel A
0 vRF!Header!SuFIndicator = 0
1 vRF!Header!SuFIndicator = 1
3
SEA
Syntax Error on Channel A — protocol related variable: vSS!SyntaxError channel A
0 vSS!SyntaxError = 0
1 vSS!SyntaxError = 1
2
CEA
Content Error on Channel A — protocol related variable: vSS!ContentError channel A
0 vSS!ContentError = 0
1 vSS!ContentError = 1
1
BVA
Boundary Violation on Channel A — protocol related variable: vSS!BViolation channel A
0 vSS!BViolation = 0
1 vSS!BViolation = 1
0
TCA
Transmission Conflict on Channel A — protocol related variable: vSS!TxConflict channel A
0 vSS!TxConflict = 0
1 vSS!TxConflict = 1
Table 3-86. Message Buffer Data Field Minimum Length
physical message buffer
assigned to
minimum length defined by
Individual Message Buffer in Segment 1 MBDSR.MBSEG1DS
Receive Shadow Buffer in Segment 1 MBDSR.MBSEG1DS
Individual Message Buffer in Segment 2 MBDSR.MBSEG2DS
Receive Shadow Buffer in Segment 2 MBDSR.MBSEG2DS
Receive FIFO for channel A RFDSR.ENTRY_SIZE (RFSR.SEL = 0)
Table 3-85. Transmit Message Buffer Slot Status Structure Field Descriptions (Continued)
Field Description