FlexRay Module (FLEXRAYV2)
MFR4300 Data Sheet, Rev. 1
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 3-109
.
9
BVB
Boundary Violation on Channel B
— protocol related variable:
vSS!BViolation
channel B
0
vSS!BViolation
= ‘0’
1
vSS!BViolation
= ‘1’
Transmission Conflict on Channel B
— protocol related variable:
vSS!TxConflict
channel B
0
vSS!TxConflict
= ‘0’
1
vSS!TxConflict
= ‘1’
Valid Frame on Channel A
— protocol related variable:
vSS!ValidFrame
channel A
0
vSS!ValidFrame
= ‘0’
1
vSS!ValidFrame
= ‘1’
Sync Frame Indicator Channel A
— protocol related variable:
vRF!Header!SyFIndicator
channel A
0
vRF!Header!SyFIndicator
= ‘0’
1
vRF!Header!SyFIndicator
= ‘1’
Null Frame Indicator Channel A
— protocol related variable:
vRF!Header!NFIndicator
channel A
0
vRF!Header!NFIndicator
= ‘0’
1
vRF!Header!NFIndicator
= ‘1’
Startup Frame Indicator Channel A
— protocol related variable:
vRF!Header!SuFIndicator
channel A
0
vRF!Header!SuFIndicator
= ‘0’
1
vRF!Header!SuFIndicator
= ‘1’
Syntax Error on Channel A
— protocol related variable:
vSS!SyntaxError
channel A
0
vSS!SyntaxError
= ‘0’
1
vSS!SyntaxError
= ‘1’
Content Error on Channel A
— protocol related variable:
vSS!ContentError
channel A
0
vSS!ContentError
= ‘0’
1
vSS!ContentError
= ‘1’
Boundary Violation on Channel A
— protocol related variable:
vSS!BViolation
channel A
0
vSS!BViolation
= ‘0’
1
vSS!BViolation
= ‘1’
Transmission Conflict on Channel A
— protocol related variable:
vSS!TxConflict
channel A
0
vSS!TxConflict
= ‘0’
1
vSS!TxConflict
= ‘1’
8
TCB
7
VFA
6
SYA
5
NFA
4
SUA
3
SEA
2
CEA
1
BVA
0
TCA
Table 3-86. Message Buffer Data Field Minimum Length
physical message buffer
assigned to
minimum length defined by
Individual Message Buffer in Segment 1
Receive Shadow Buffer in Segment 1
Individual Message Buffer in Segment 2
Receive Shadow Buffer in Segment 2
Receive FIFO for channel A
MBDSR.MBSEG1DS
MBDSR.MBSEG1DS
MBDSR.MBSEG2DS
MBDSR.MBSEG2DS
RFDSR.ENTRY_SIZE (RFSR.SEL = 0)
Table 3-85. Transmit Message Buffer Slot Status Structure Field Descriptions (Continued)
Field
Description