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Table 26-6. State Transitions of Communication Controller Overall State Machine
T# Condition From To
1 Hardware reset All States DEFAULT_CONFIG
2 Command CONFIG, SUCC1.CMD(3-0) = 0001 DEFAULT_CONFIG CONFIG
3 Unlock sequence followed by command MONITOR_MODE, CONFIG MONITOR_MODE
SUCC1.CMD(3-0) = 1011
4 Command CONFIG, SUCC1.CMD(3-0) = 0001 MONITOR_MODE CONFIG
5 Unlock sequence followed by command READY, SUCC1.CMD(3- CONFIG READY
0) = 0010
6 Command CONFIG, SUCC1.CMD(3-0) = 0001 READY CONFIG
7 Command WAKEUP, SUCC1.CMD(3-0) = 0011 READY WAKEUP
8 Complete, non-aborted transmission of wakeup pattern OR WAKEUP READY
received WUP OR received frame header OR command READY,
SUCC1.CMD(3-0) = 0010
9 Command RUN, SUCC1.CMD(3-0) = 0100 READY STARTUP
10 Successful startup STARTUP NORMAL_ACTIVE
11 Clock correction failed counter reached “maximum without clock NORMAL_ACTIVE NORMAL_PASSIVE
correction passive” limit configured by SUCC3.WCP(3-0)
12 Number of valid correction terms reached the Passive to Active NORMAL_PASSIVE NORMAL_ACTIVE
limit configured by SUCC1.PTA(4-0)
13 Command READY, SUCC1.CMD(3-0) = 0010 STARTUP, READY
NORMAL_ACTIVE,NORM
AL_PASSIVE
14 Clock Correction Failed counter reached “maximum without clock NORMAL_ACTIVE HALT
correction fatal” limit configured by SUCC3.WCF(3-0) AND bit
SUCC1.HCSE set to 1 OR command HALT, SUCC1.CMD(3-0) =
0110
15 Clock Correction Failed counter reached “maximum without clock NORMAL_PASSIVE HALT
correction fatal” limit configured by SUCC3.WCF(3-0) AND bit
SUCC1.HCSE set to 1 OR command HALT, SUCC1.CMD(3-0) =
0110
16 Command FREEZE, SUCC1.CMD(3-0) = 0111 All States HALT
17 Command CONFIG, SUCC1.CMD(3-0) = 0001 HALT DEFAULT_CONFIG
26.2.6.2 DEFAULT_CONFIG State
In DEFAULT_CONFIG state, the communication controller is stopped. All configuration registers are
accessible and the pins to the physical layer are in their inactive state.
The communication controller enters this state:
• When leaving hardware reset
• When exiting from HALT state
To leave DEFAULT_CONFIG state the host has to write SUCC1.CMD(3-0) = 0001. The communication
controller then transits to CONFIG state.
26.2.6.3 CONFIG State
In CONFIG state, the communication controller is stopped. All configuration registers are accessible and
the pins to the physical layer are in their inactive state. This state is used to initialize the communication
controller configuration.
The communication controller enters this state:
• When exiting from DEFAULT_CONFIG state
• When exiting from MONITOR_MODE or READY state
1174
FlexRay Module SPNU563–May 2014
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