NXP Semiconductors PXN2020, Reference Manual, Page: 657 / 1376

FlexRay Communication Controller (FlexRAY)
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor 26-43
26.5.2.33 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 26.6.12, Sync Frame ID and Sync Frame Deviation Tables.
Table 26-38. SFTOR Field Description
Field Description
SFTOR Sync Frame Table Offset — The offset of the Sync Frame Tables in the Flexray Memory. This offset is required
to be 16-bit aligned. Thus STF_OFFSET[0] is always 0.
Base + 0x0044 Write: Normal Mode
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R 0 0 CYCNUM ELKS OLKS EVAL OVAL 0 0
SDV
EN
SID
EN
W ELKT OLKT OPT
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 26-33. Sync Frame Table Configuration, Control, Status Register (SFTCCSR)
Table 26-39. SFTCCSR Field Descriptions
Field Description
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.
OLKT 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.
CYCNUM 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.
ELKS 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.
OLKS 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.
EVAL 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 controller 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).
OVAL 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 controller 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).