PXN20RM Datasheet, PDF (715/1376 Pages) Freescale Semiconductor, Inc – PXN20 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
Figure 26-120. Single Transmit Message Buffer States
Table 26-96. 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
Access Region
Appl. Module
Description
–
CM, Idle - Message Buffer is idle.
SR _{Included in message buffer search.}
CFG
– Disabled - Message Buffer under configuration.
Excluded from message buffer search.
CFG
– Disabled and Locked - Message Buffer under configuration.
Excluded from message buffer search.
MSG
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.
MSG
–
MSG
–
MSG
–
– 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.
– 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
Freescale Semiconductor
PXN20 Microcontroller Reference Manual, Rev. 1
26-101