FlexRay Module (FLEXRAYV4)
MFR4310 Reference Manual, Rev. 2
60 Freescale Semiconductor
3.1.3 Color Coding
Throughout this chapter types of items are highlighted through the use of an italicized color font.
FlexRay protocol parameters, constants and variables are highlighted with blue italics. An example is the
parameter gdActionPointOffset.
FlexRay protocol states are highlighted in green italics. An example is the state POC:normal active.
3.1.4 Overview
The FlexRay module is a FlexRay communication controller that implements the FlexRay
Communications System Protocol Specification, Version 2.1 Rev A.
The FlexRay module has three main components:
• Controller host interface (CHI)
• Protocol engine (PE)
• Clock domain crossing unit (CDC)
A block diagram of the FlexRay module with its surrounding modules is given in Figure 3-1.
NIT Network Idle Time
PE Protocol Engine
POC Protocol Operation Control. Each state of the POC is denoted by POC:state
Rx Reception
SEQ Sequencer Engine
TCU Time Control Unit
Tx Transmission
Table 3-1. List of Terms (Continued)
Term Definition
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