FlexRay Communication Controller (FLEXRAY)
MPC5510 Microcontroller Family Reference Manual, Rev. 1
30-20
Freescale Semiconductor
Preliminary
30.5.2.9
Protocol Operation Control Register (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 30.7.4, “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 30.6.11, “External Clock Synchronization”
.
Table 30-15. MBSSUTR Field Descriptions
Field
Description
LAST_MB_SEG1 Last Message Buffer In Segment 1. This field defines the message buffer number of the last individual
message buffer that is assigned to the first message buffer segment. The individual message buffers in the
first segment correspond to the message buffer control registers MBCCSRn, MBCCFRn, MBFIDRn,
MBIDXRn with n <= LAST_MB_SEG1. The first message buffer segment contains LAST_1
individual message buffers.
Note: The first message buffer segment contains at least one individual message buffer.
The individual message buffers in the second message buffer segment correspond to the message buffer
control registers MBCCSRn, MBCCFRn, MBFIDRn, MBIDXRn with LAST_MB_SEG1 < n < 64.
Note: If LAST_MB_SEG1 = 63 all individual message buffers belong to the first message buffer segment
and the second message buffer segment is empty.
LAST_MB_UTIL
Last Message Buffer Utilized. This field defines the message buffer number of last utilized individual
message buffer. The message buffer search engine examines all individual message buffer with a message
buffer number n <= LAST_MB_UTIL.
Note: If LAST_MB_UTIL=LAST_MB_SEG1 all individual message buffers belong to the first message
buffer segment and the second message buffer segment is empty.
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 30-9. Protocol Operation Control Register (POCR)
Table 30-16. POCR Field Descriptions (Sheet 1 of 2)
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 (PCR29)
.
00 do not apply external offset correction value
01 reserved
10 subtract external offset correction value
11 add external offset correction value