mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 61
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mfr4300
Manufacturer Part Number
mfr4300
Description
Flexray Communication Controllers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MFR4300.pdf
(266 pages)
- Current page: 61 of 266
- Download datasheet (2Mb)
3.1.6
3.1.6.1
This is the default mode the FlexRay module enters during hard reset. The FlexRay module indicates that
it is in the Disabled Mode by negating the FlexRay module enable bit MEN in the
Register
The protocol engine is in its reset state. No communication is performed on the FlexRay bus.
All registers with the write access conditions Any Time and Disabled Mode can be accessed for writing as
stated in
The application can configure the FlexRay module by accessing the FlexRay module configuration bits
and fields in the
The FlexRay module leaves disabled mode when the application sets the FlexRay module enable bit MEN
in the
and puts the protocol engine into the
3.1.6.2
In this mode the FlexRay module is fully functional.
The FlexRay module indicates that it is in normal mode by asserting the FlexRay module enable bit (MEN)
in the
This mode is entered when the application requests the FlexRay module to leave the disabled mode. If this
mode is entered, the protocol engine is in its
Depending on the values of the SCM, CHA, and CHB bits in the
the corresponding FlexRay bus driver ports are enabled and driven.
The application can transition the protocol engine into other protocol states using the
Control Register
Protocol Specification, Version 2.1.
Freescale Semiconductor
•
•
•
•
Module Configuration Register (MCR)
Module Configuration Register
— internal synchronization frame ID and synchronization frame measurement tables can be
fractional macroticks are supported for clock correction
maskable interrupt sources provided via individual and combined interrupt lines
1 absolute timer
1 timer that can be configured to absolute or relative
(MCR).
Section 3.3.2, “Register
copied into the FlexRay Memory
Modes of Operation
Disabled Mode
Normal Mode
After the application has enabled the FlexRay module it cannot disable the
FlexRay module later on.
Module Configuration Register
(POCR). For details regarding protocol states, see FlexRay Communications System
Descriptions”.
POC:default config
(MCR).
MFR4300 Data Sheet, Rev. 3
POC:default config
The FlexRay module then deasserts the protocol engine reset
(MCR).
NOTE
state.
Module Configuration Register
state.
FlexRay Module (FLEXRAYV2)
Module Configuration
Protocol Operation
(MCR),
61
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