mfr4200 Freescale Semiconductor, Inc, mfr4200 Datasheet - Page 199

• Manufacturer Part Number: mfr4200
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

3.9.2
Protocol Operation Control: Config state.
During this state, the host configures the CC in accordance with the access scheme for CC internal
resources (see
MCU only through the active receive, active transmit, and active receive FIFO
configuration principles (see
In the configuration state:
On leaving the configuration state, some registers are cleared by the CC (this operation is highlighted in
descriptions of those registers).
The CC enters the configuration state:
The CC exits from the configuration state and enters the normal state of operation (see
“Normal Active
Figure 3-148
Freescale Semiconductor
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All operations with the protocol state machine are stopped.
There is no transmission or reception on the FlexRay bus.
There is no clock synchronization running.
The host interface of the CC is operational.
The host type is fixed after the hard reset state.
All message buffers, after entering the configuration state from the hard reset state, are “not used”
buffers. The CC stores its configuration if it enters the configuration state from a state other than
the hard reset state.
If the host puts the CC into the configuration state by setting the CONFIG bit in MCR0 register to
‘1’ (see
will be held, except data that is initialized when leaving the configuration state.
By leaving the hard reset state.
According to the state of the CONFIG bit in the MCR0 register (see
Configuration Register 0
By leaving the sleep state or the diagnosis stop states.
Configuration State
represents a timing diagram of the transition from the configuration state to the normal state.
Section , “Receive, receive FIFO, and transmit message buffers are accessible to the host
The CC enters the configuration state immediately the MCR0 CONFIG bit
is set. This may cause a protocol violation; the user must take care to ensure
that entry to the configuration state does not cause a protocol violation.
Section 3.2.3.2.1, “Module Configuration Register 0
State”).
Section 3.5, “Message Buffer Handling and
(MCR0)”).
MFR4200 Data Sheet, Rev. 0
NOTE
(MCR0)”), the CC configuration data
Operations”).
Section 3.2.3.2.1, “Module
Communication Controller States
buffers.”) and the
Section 3.9.4,
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