FlexRay Communication Controller (FLEXRAY)
MPC5510 Microcontroller Family Reference Manual, Rev. 1
Freescale Semiconductor
30-21
Preliminary
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 (PCR21)
00 do not apply external rate correction value
01 reserved
10 subtract external rate correction value
11 add external rate correction value
BSY
WMC
Protocol Control Command Write Busy. This status bit indicates the acceptance of the protocol control command
issued by the application via the POCCMD field. The FlexRay block sets this status bit when the application has
issued a protocol control command via the POCCMD field. The FlexRay block clears this status bit when protocol
control command was accepted by the PE.When the application issues a protocol control command while the
BSY bit is asserted, the FlexRay block ignores this command, sets the protocol command ignored error flag
PCMI_EF in the
CHI Error Flag Register (CHIERFR)
, and will not change the value of the POCCMD field.
0 Command write idle, command accepted and ready to receive new protocol command.
1 Command write busy, command not yet accepted, not ready to receive new protocol command.
Write Mode Command. This bit controls the write mode of the POCCMD field.
0 Write to POCCMD field on register write.
1 Do not write to POCCMD field on register write.
POCCMD
Protocol Control Command. The application writes to this field to issue a protocol control command to the PE.
The FlexRay block sends the protocol command to the PE immediately. While the transfer is running, the BSY
bit is set.
0000 ALLOW_COLDSTART — Immediately activate capability of node to cold start cluster.
0001 ALL_SLOTS — Delayed
1
transition to the all slots transmission mode.
0010 CONFIG — Immediately transition to the
POC:config
state.
0011 FREEZE — Immediately transition to the
POC:halt
state.
0100 READY, CONFIG_COMPLETE — Immediately transition to the
POC:ready
state.
0101 RUN — Immediately transition to the
POC:startup
start state.
0110 DEFAULT_CONFIG — Immediately transition to the
POC:default config
state.
0111 HALT — Delayed transition to the
POC:halt
state
1000 WAKEUP — Immediately initiate the wakeup procedure.
1001 reserved
1010 reserved
1011 reserved
1100 RESET
2
— Immediately reset the Protocol Engine.
1101 reserved
1110 reserved
1111 reserved
1
Delayed means on completion of current communication cycle.
2
Additional to FlexRay Communications System Protocol Specification, Version 2.1 Rev A
After sending the
RESET
command, it is mandatory to execute the
command sequence described in
Section 30.7.5, “Protocol Reset
immediately, to reach the DEFAULT CONFIG state correctly.
Table 30-16. POCR Field Descriptions (Sheet 2 of 2)
Field
Description