PXS20RM Datasheet, PDF (760/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

FlexRay Communication Controller
Field
ELKT
OLKT
CYCNUM
ELKS
OLKS
EVAL
OVAL
OPT
SDVEN
SIDEN
Table 26-40. FR_SFTCCSR Field Descriptions
Description
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 CC 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 CC 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).
One Pair Trigger — This trigger bit controls whether the CC writes continuously or only one pair
of Sync Frame Tables into the FlexRay memory area.
If this trigger is set to 1 while SDVEN or SIDEN is set to 1, the CC writes only one pair of the
enabled Sync Frame Tables corresponding to the next even-odd-cycle pair into the FlexRay
memory area. In this case, the CC clears the SDVEN or SIDEN bits immediately.
If this trigger is set to 0 while SDVEN or SIDEN is set to 1, the CC writes continuously the enabled
Sync Frame Tables into the FlexRay memory area.
0 Write continuously pairs of enabled Sync Frame Tables into FlexRay memory area.
1 Write only one pair of enabled Sync Frame Tables into FlexRay memory area.
Sync Frame Deviation Table Enable — This bit controls the generation of the Sync Frame
Deviation Tables. The application must set this bit to request the CC to write the Sync Frame
Deviation Tables into the FlexRay memory area.
0 Do not write Sync Frame Deviation Tables
1 Write Sync Frame Deviation Tables into FlexRay memory area
Note: If SDVEN is set to 1, then SIDEN must also be set to 1.
Sync Frame ID Table Enable — This bit controls the generation of the Sync Frame ID Tables. The
application must set this bit to 1 to request the CC to write the Sync Frame ID Tables into the
FlexRay memory area.
0 Do not write Sync Frame ID Tables
1 Write Sync Frame ID Tables into FlexRay memory area
26-48
PXS20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor