
Chapter 13 FlexRay Communication Controller (FLEXRAY)
MC9S12XF - Family Reference Manual, Rev.1.19
Freescale Semiconductor
515
13.5.2.48 Slot Status Counter Registers (SSCR0–SSCR3)
Each of these four registers provides the slot status counter value for the previous communication cycle(s)
and is updated at the cycle start. The provided value depends on the control bits and elds in the related
internal slot status counter condition register SSCCRn, which can be programmed by using the
Slot Status7
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 Conict on Channel A — protocol related variable: vSS!TxConict channel A
0 vSS!TxConict = 0
1 vSS!TxConict = 1
Module Base + 0x0078
(SSCR0)
Module Base + 0x007A
(SSCR1)
Module Base + 0x007C
(SSCR2)
Module Base + 0x007E
(SSCR3)
Additional Reset: RUN Command
15
14
13
12
11
10
9876543210
R
SLOTSTATUSCNT
W
Reset
0000000000000000
Figure 13-48. Slow Status Counter Registers (SSCR0–SSCR3)
Table 13-57. SSR0–SSR7 Field Descriptions (continued)
Field
Description