mfr4200 Freescale Semiconductor, Inc, mfr4200 Datasheet - Page 200

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

MFR4200 FlexRay Communication Controller
3.9.3
Protocol Operation Control: Freeze state.
The diagnosis stop state is intended to support the user during host software off-line system diagnosis. It
allows:
In the diagnosis stop state:
The CC enters the diagnosis stop state from the normal state of operation:
200
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Time
Figure 3-148. Timing Diagram of CC State Transition from Configuration State to Normal State
the user to stop all protocol engine operations (frame transmission, reception, clock
synchronization, etc.) except host interface operations,
the host to read all host interface registers.
All operations of the protocol state machine are stopped.
There is no transmission and no reception on the FlexRay bus.
There is no clock synchronization running.
The host interface is operational.
All registers have the same access scheme as they have in normal operation (see
If the host sets the DIAGSTOP bit in the MCR0 register (see
Configuration Register 0
Configuration
CC is in the
State
Diagnosis Stop State
Configuration State
‘0’ to the MCR0 bit in
CONFIG, requesting
The host has written
Configuration State
the CC to leave the
(MCR0)”).
100
MFR4200 Data Sheet, Rev. 0
1
microticks
microseconds
delay
4000
configured by
the DCR in
microticks
Delay
Programmed Delay
Note:
1
For a 40.000 MHz crystal connected to
EXTAL/XTAL pins, or for 40.000 MHz CC_CLK
input clock.
Section 3.2.3.2.1, “Module
Normal State
entering the
CC starts
Freescale Semiconductor
Startup
Table
3-16);