Freescale Semiconductor FlexRay MFR4310 - Chapter 3 Flexray Module (FLEXRAYV4); Introduction; Reference; Glossary

MFR4310 Reference Manual, Rev. 2
Freescale Semiconductor 59
Chapter 3
FlexRay Module (FLEXRAYV4)
3.1 Introduction
3.1.1 Reference
The following documents are referenced.
• FlexRay Communications System Protocol Specification, Version 2.1 Rev A
• FlexRay Communications System Electrical Physical Layer Specification, Version 2.1 Rev A
3.1.2 Glossary
This section provides a list of terms used in the description of the FlexRay module.
Table 3-1. List of Terms
Term Definition
BCU Buffer Control Unit. Handles message buffer access.
CC Communication Controller
CDC Clock Domain Crosser
CHI Controller Host Interface
Cycle length in μT The actual length of a cycle in μT for the ideal controller (+/- 0 ppm)
EBI External Bus Interface
FRM FlexRay Memory. Memory to store message buffer payload, header, and status, and to store
synchronization frame related tables.
FSS Frame Start Sequence
HIF Host Interface. Provides host access to FlexRay module.
Host The FlexRay CC host MCU
LUT Look Up Table. Stores message buffer header index value.
MB Message Buffer
MBIDX Message Buffer Index: the position of a header field entry within the header area. If the header area
is accessed as an array, this is the same as the array index of the entry.
MBNum Message Buffer Number: Position of message buffer configuration registers within the register map.
For example, Message Buffer Number 5 corresponds to the MBCCS5 register.
MCU Microcontroller Unit
μT Microtick. A microtick is one CLK_CC period long, and starts on the rising edge of CLK_CC.
MT Macrotick
MTS Media Access Test Symbol