MC9S12XF512 Datasheet, PDF (479/1300 Pages) Freescale Semiconductor, Inc – S12X Microcontrollers

Chapter 13 FlexRay Communication Controller (FLEXRAY)
Write: Normal Mode
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 13.7.4, “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 13.6.11, “External Clock Synchronization”.
Table 13-17. POCR Field Descriptions (Sheet 1 of 2)
Field
15
WME
11–10
EOC_AP
9–8
ERC_AP
Description
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.
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 (PCR29).
00 do not apply external offset correction value
01 reserved
10 subtract external offset correction value
11 add external offset correction value
External Rate Correction Application — This field is used to trigger application of the external rate correction
value defined in the Protocol Configuration Register 21 (PCR21)
00 do not apply external rate correction value
01 reserved
10 subtract external rate correction value
11 add external rate correction value
MC9S12XF - Family Reference Manual, Rev.1.18
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