NXP Semiconductors PXN2020 - 26.5.2.31 Sync Frame Counter Register (SFCNTR); 26.5.2.32 Sync Frame Table Offset Register (SFTOR)

FlexRay Communication Controller (FlexRAY)
PXN20 Microcontroller Reference Manual, Rev. 1
26-42 Freescale Semiconductor
26.5.2.31 Sync Frame Counter Register (SFCNTR)
This register provides the number of synchronization frames that are used for clock synchronization in the
last even and in the last odd numbered communication cycle. This register is updated after the start of the
NIT and before 10 MT after offset correction start.
NOTE
If the application has locked the even synchronization table at the end of the
static segment of an even communication cycle, the controller will not
update the fields SFEVB and SFEVA.
If the application has locked the odd synchronization table at the end of the
static segment of an odd communication cycle, the controller will not update
the values SFODB and SFODA.
26.5.2.32 Sync Frame Table Offset Register (SFTOR)
This register defines the FlexRay Memory related offset for sync frame tables. For more details, see
Section 26.6.12, Sync Frame ID and Sync Frame Deviation Tables.
Base + 0x0040 Additional Reset: RUN Command
0123456789101112131415
R SFEVB SFEVA SFODB SFODA
W
Reset0000000000000000
Figure 26-31. Sync Frame Counter Register (SFCNTR)
Table 26-37. SFCNTR Field Descriptions
Field Description
SFEVB Sync Frames Channel B, even cycle — protocol related variable: size of (vsSyncIdListB for even cycle)
This field provides the size of the internal list of frame IDs of received synchronization frames used for clock
synchronization.
SFEVB Sync Frames Channel A, even cycle — protocol related variable: size of (vsSyncIdListA for even cycle)
This field provides the size of the internal list of frame IDs of received synchronization frames used for clock
synchronization.
SFODB Sync Frames Channel B, odd cycle — protocol related variable: size of (vsSyncIdListB for odd cycle)
This field provides the size of the internal list of frame IDs of received synchronization frames used for clock
synchronization.
SFODA Sync Frames Channel A, odd cycle — protocol related variable: size of (vsSyncIdListA for odd cycle)
This field provides the size of the internal list of frame IDs of received synchronization frames used for clock
synchronization.
Base + 0x0042 Write: POC:config
0123456789101112131415
R
SFT_OFFSET[15:1]
0
W
Reset0000000000000000
Figure 26-32. Sync Frame Table Offset Register (SFTOR)