MFR4300 Datasheet, PDF (146/266 Pages) Freescale Semiconductor, Inc – FlexRay Communication Controllers

FlexRay Module (FLEXRAYV2)
Table 3-82. Receive Message Buffer Slot Status Content
Receive Message Buffer Type
Individual Receive Message Buffer assigned to both channels
MBCCSRn.CHA=’1’ and MBCCSRn.CHB=’1’
Individual Receive Message Buffer assigned to channel A
MBCCSRn.CHA=’1’ and MBCCSRn.CHB=’0’
Individual Receive Message Buffer assigned to channel B
MBCCSRn.CHA=’0’ and MBCCSRn.CHB=’1’
Receive FIFO Channel A Message Buffer
Receive FIFO Channel B Message Buffer
Slot Status Content
see Figure 3-103
see Figure 3-104
see Figure 3-105
see Figure 3-104
see Figure 3-105
The meaning of the bits in the slot status structure is explained in Table 3-83.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R VFB SYB NFB SUB SEB CEB BVB CH VFA SYA NFA SUA SEA CEA BVA 0
Reset –
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Figure 3-103. Receive Message Buffer Slot Status Structure (ChAB)
15
R0
Reset –
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0 VFA SYA NFA SUA SEA CEA BVA 0
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Figure 3-104. Receive Message Buffer Slot Status Structure (ChA)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R VFB SYB NFB SUB SEB CEB BVB 1
0
0
0
0
0
0
0
0
Reset –
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Figure 3-105. Receive Message Buffer Slot Status Structure (ChB)
Table 3-83. Receive Message Buffer Slot Status Field Descriptions
Field
15
VFB
14
SYB
13
NFB
12
SUB
Description
Common Message Buffer Status Bits
Valid Frame on Channel B — protocol related variable: vSS!ValidFrame channel B
0 vSS!ValidFrame = ‘0’
1 vSS!ValidFrame = ‘1’
Sync Frame Indicator Channel B — protocol related variable: vRF!Header!SyFIndicator channel B
0 vRF!Header!SyFIndicator = ‘0’
1 vRF!Header!SyFIndicator = ‘1’
Null Frame Indicator Channel B — protocol related variable: vRF!Header!NFIndicator channel B
0 vRF!Header!NFIndicator = ‘0’
1 vRF!Header!NFIndicator = ‘1’
Startup Frame Indicator Channel B — protocol related variable: vRF!Header!SuFIndicator channel B
0 vRF!Header!SuFIndicator = ‘0’
1 vRF!Header!SuFIndicator = ‘1’
MFR4300 Data Sheet, Rev. 1
146
Freescale Semiconductor