NXP Semiconductors MPC5644A, Reference Manual, Page: 1464 / 1735

FlexRay Communication Controller (FlexRay)
MPC5644A Microcontroller Reference Manual, Rev. 6
1464 Freescale Semiconductor
33.5.2.11 Protocol Operation Control Register (FR_POCR)
The application uses this register to issue
• protocol control commands
• external clock correction commands
Protocol control commands are issued by writing to the POCCMD field. For more information on protocol
control commands, see
Section 33.7.7, Protocol control command execution” .
External clock correction commands are issued by writing to the EOC_AP and ERC_AP fields. For more
information on external clock correction, refer to
Section 33.6.11, External clock synchronization” .
Base + 0x0014 Write: Normal Mode
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R 0 0 0 0
EOC_AP ERC_AP
BSY 0 0 0
POCCMD
W WME WMC
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 33-11. Protocol Operation Control Register (FR_POCR)
Table 33-16. FR_POCR field description
Field Description
WME Write Mode External Correction — This bit controls the write mode of the EOC_AP and ERC_AP
fields.
0 Write to EOC_AP and ERC_AP fields on register write.
1 No write to EOC_AP and ERC_AP fields on register write.
EOC_AP External Offset Correction Application — This field is used to trigger the application of the external
offset correction value defined in the Protocol Configuration Register 29 (FR_PCR29) .
00 do not apply external offset correction value
01 Reserved
10 subtract external offset correction value
11 add external offset correction value
ERC_AP External Rate Correction Application — This field is used to trigger application of the external rate
correction value defined in the Protocol Configuration Register 21 (FR_PCR21)
00 do not apply external rate correction value
01 Reserved
10 subtract external rate correction value
11 add external rate correction value