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FlexRay Module (FLEXRAYV2)
MFR4300 Data Sheet, Rev. 1
Freescale Semiconductor
99
3.3.2.32
Sync Frame Table Configuration, Control, Status Register (SFTCCSR)
This register provides configuration, control, and status information related to the generation and access
of the clock sync ID Tables and clock sync measurement tables. For a detailed description, see
Section 3.4.12, “Sync Frame ID and Sync Frame Deviation Tables
”.
Table 3-37. SFTOR Field Description
Field
Description
15–1
SFTOR
Sync Frame Table Offset
— Offset of the Sync Frame Tables in the FRM. This offset is required to be 16-bit
aligned. Thus STF_OFFSET[0] is always 0.
0x0044
Write: Normal Mode
15
0
14
0
13
12
11
CYCNUM
10
9
8
7
6
5
4
3
0
2
0
1
0
R
W ELKT OLKT
Reset
0
ELKS OLKS EVAL OVAL
SDV
EN
0
SID
EN
0
OPT
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 3-31. Sync Frame Table Configuration, Control, Status Register (SFTCCSR)
Table 3-38. SFTCCSR Field Descriptions (Sheet 1 of 2)
Field
Description
15
ELKT
Even Cycle Tables Lock/Unlock Trigger
— This trigger bit is used to lock and unlock the even cycle tables.
0 No effect
1 Triggers lock/unlock of the even cycle tables.
Odd Cycle Tables Lock/Unlock Trigger
— This trigger bit is used to lock and unlock the odd cycle tables.
0 No effect
1 Triggers lock/unlock of the odd cycle tables.
Cycle Number
— This field provides the number of the cycle in which the currently locked table was
recorded. If none or both tables are locked, this value is related to the even cycle table.
Even Cycle Tables Lock Status
— This status bit indicates whether the application has locked the even
cycle tables.
0 Application has not locked the even cycle tables.
1 Application has locked the even cycle tables.
Odd Cycle Tables Lock Status
— This status bit indicates whether the application has locked the odd cycle
tables.
0 Application has not locked the odd cycle tables.
1 Application has locked the odd cycle tables.
Even Cycle Tables Valid
— This status bit indicates whether the Sync Frame ID and Sync Frame Deviation
Tables for the even cycle are valid. The FlexRay module clears this status bit when it starts updating the
tables, and sets this bit when it has finished the table update.
0 Tables are not valid (update is ongoing)
1 Tables are valid (consistent).
Odd Cycle Tables Valid
— This status bit indicates whether the Sync Frame ID and Sync Frame Deviation
Tables for the odd cycle are valid. The FlexRay module clears this status bit when it starts updating the tables,
and sets this bit when it has finished the table update.
0 Tables are not valid (update is ongoing)
1 Tables are valid (consistent).
14
OLKT
13–8
CYCNUM
7
ELKS
6
OLKS
5
EVAL
4
OVAL