
Chapter 13 FlexRay Communication Controller (FLEXRAY)
MC9S12XF - Family Reference Manual, Rev.1.19
554
Freescale Semiconductor
The meaning of the bits in the slot status structure is described in
Table 13-86.
Figure 13-109. Transmit Message Buffer Slot Status Structure (ChAB)
Figure 13-110. Transmit Message Buffer Slot Status Structure (ChA)
Figure 13-111. Transmit Message Buffer Slot Status Structure (ChB)
Table 13-87. Transmit Message Buffer Slot Status Content
Transmit Message Buffer Type
Slot Status Content
Individual Transmit Message Buffer assigned to both channels
MBCCSRn.CHA=1 and MBCCSRn.CHB=1
Individual Transmit Message Buffer assigned to channel A
MBCCSRn.CHA=1 and MBCCSRn.CHB=0
Individual Transmit Message Buffer assigned to channel B
MBCCSRn.CHA=0 and MBCCSRn.CHB=1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R VFB
SYB
NFB
SUB
SEB
CEB
BVB
TCB
VFA
SYA
NFA
SUA
SEA
CEA
BVA
TCA
Reset
–
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
0
VFA
SYA
NFA
SUA
SEA
CEA
BVA
TCA
Reset
–
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R VFB
SYB
NFB
SUB
SEB
CEB
BVB
TCB
0
Reset
–
Table 13-88. Transmit Message Buffer Slot Status Structure Field Descriptions
Field
Description
15
VFB
Valid Frame on Channel B — protocol related variable: vSS!ValidFrame channel B
0 vSS!ValidFrame = 0
1 vSS!ValidFrame = 1
14
SYB
Sync Frame Indicator Channel B — protocol related variable: vRF!Header!SyFIndicator channel B
0 vRF!Header!SyFIndicator = 0
1 vRF!Header!SyFIndicator = 1
13
NFB
Null Frame Indicator Channel B — protocol related variable: vRF!Header!NFIndicator channel B
0 vRF!Header!NFIndicator = 0
1 vRF!Header!NFIndicator = 1
12
SUB
Startup Frame Indicator Channel B — protocol related variable: vRF!Header!SuFIndicator channel B
0 vRF!Header!SuFIndicator = 0
1 vRF!Header!SuFIndicator = 1
11
SEB
Syntax Error on Channel B — protocol related variable: vSS!SyntaxError channel B
0 vSS!SyntaxError = 0
1 vSS!SyntaxError = 1
10
CEB
Content Error on Channel B — protocol related variable: vSS!ContentError channel B
0 vSS!ContentError = 0
1 vSS!ContentError = 1