FlexRay Module (FLEXRAYV4)
MFR4310 Reference Manual, Rev. 2
Freescale Semiconductor
109
3.3.2.43
Slot Status Counter Condition Register (SSCCR)
This register is used to access and program the four internal non-memory mapped Slot Status Counter
Condition Registers SSCCR0 to SSCCR3. Each of these four internal slot status counter condition
registers defines the mode and the conditions for incrementing the counter in the corresponding
Counter Registers (SSCR0–SSCR3)
. The correspondence is given in
of slot status counters, refer to
Section 3.4.18.4, “Slot Status Counter Registers
”.
Table 3-50. SSSR Field Descriptions
Field
Description
15
WMD
Write Mode — This control bit defines the write mode of this register.
0 Write to all fields in this register on write access.
1 Write to SEL field only on write access.
13–12
SEL
Selector — This field selects one of the four internal slot status selection registers for access.
00 select SSSR0.
01 select SSSR1.
10 select SSSR2.
11 select SSSR3.
10–0
SLOTNUMBER
Slot Number — This field specifies the number of the slot whose status is saved in the corresponding slot
status registers.
Note: If this value is set to 0, the related slot status register provides the status of the symbol window after the
NIT start, and provides the status of the NIT after the cycle start.
Table 3-51. Mapping Between SSSRn and SSRn
Internal Slot
Status Selection
Register
Write the Slot Status of the Slot Selected by SSSRn for each
Even Communication Cycle
Odd Communication Cycle
For Channel B
to
For Channel A
to
For Channel B
to
For Channel A
to
SSSR0
SSR0[15:8]
SSR0[7:0]
SSR1[15:8]
SSR1[7:0]
SSSR1
SSR2[15:8]
SSR2[7:0]
SSR3[15:8]
SSR3[7:0]
SSSR2
SSR4[15:8]
SSR4[7:0]
SSR5[15:8]
SSR5[7:0]
SSSR3
SSR6[15:8]
SSR6[7:0]
SSR7[15:8]
SSR7[7:0]
0x0066
16-bit write access required
Write: Any Time
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
0
0
SEL
0
CNTCFG
MCY
VFR
SYF
NUF
SUF
STATUSMASK
W WMD
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 3-42. Slot Status Counter Condition Register (SSCCR)
Summary of Contents for FlexRay MFR4310
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