PXR40RM Datasheet, PDF (683/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

FlexRay Communication Controller (FLEXRAY)
RESET_STATE
HDis
HE
HD
Idle
SU
DSS
HL
HU
HU
HL SA
DSS
HDisLck
HE
HD
HLck
MA
DSS
SA
CCSa
HL
HU
HLckCCSa
STS
MA
SSS
STS
CCNf
HL
STS
HU
SSS
STS
HLckCCNf
CCSu
SSS
CCTx
TX
CCMa
HL
HU
HLckCCMa
DSS
State
Idle
HDis
HDisLck
HLck
CCSa
HLckCCSa
CCNf
HLckCCNf
CCMa
HLckCCMa
CCTx
CCSu
Figure 22-120. Single Transmit Message Buffer States
Table 22-96. Single Transmit Message Buffer State Description
MBCCSRn
EDS
1
LCKS
0
0
0
0
1
1
1
1
0
1
1
1
0
1
1
1
0
1
1
1
0
1
0
Access Region
Appl. Module
Description
–
CFG
CFG
MSG
–
MSG
–
MSG
–
CM, Idle - Message Buffer is idle.
SR Included in message buffer search.
– Disabled - Message Buffer under configuration.
Excluded from message buffer search.
– Disabled and Locked - Message Buffer under configuration.
Excluded from message buffer search.
SR Locked - Applications access to data, control, and status.
Included in message buffer search.
– Slot Assigned - Message buffer assigned to next static slot.
Ready for Null Frame transmission.
– Locked and Slot Assigned - Applications access to data, control,
and status.Message buffer assigned to next static slot
NF Null Frame Transmission
Header is used for null frame transmission.
NF Locked and Null Frame Transmission - Applications access to
data, control, and status. Header is used for null frame transmission.
CM Message Available - Message buffer is assigned to next slot and
cycle counter filter matches.
MSG
– Locked and Message Available - Applications access to data,
control, and status. Message buffer is assigned to next slot and cycle
counter filter matches.
–
TX Message Transmission - Message buffer data transmit. Payload
data from buffer transmitted
–
TX Status Update - Message buffer status update. Update of status
flags, the slot status field, and the header index.
Freescale Semiconductor
PXR40 Microcontroller Reference Manual, Rev. 1
22-99