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© Semiconductor Components Industries, LLC, 2014
January, 2014 − Rev. 3
1 Publication Order Number:
EVBUM2037/D
NCV73810V2GEVB
NCV7381 FlexRay
)
Bus
Driver Evaluation Board
User's Manual
Introduction
This document describes the NCV7381 APP V2
Evaluation board for the ON Semiconductor NCV7381
FlexRay
®
Bus Driver. The functionality and major
parameters can be evaluated with the NCV7381_APP_v2
board.
The NCV7381 is a single-channel FlexRay
®
bus driver
compliant with the FlexRay
®
Electrical Physical Layer
Specification Rev. 3.0.1, capable of communicating at
speeds of up to 10 Mb/s. It provides differential transmit and
receive capability between a wired FlexRay
®
communication medium on one side and a protocol
controller and a host on the other side.
NCV7381 mode control functionality is optimized for
nodes permanently connected to car battery.
Additional details can be found in the NCV7381
datasheet.
The NCV7381_APP_V2 Evaluation board is a reference
design for stand-alone 2-channel FlexRay
®
node. The board
is intended to give designers easy, quick and convenient
means for evaluation of NCV7381 FlexRay bus drivers. The
design incorporates complete node solution with possibility
of modifications and small board size. A set of two boards
allows users immediately start with the NCV7381 FlexRay
Bus Driver. The MCU is preprogrammed with a firmware
which provides simple mode control and FlexRay
communication. With use of Freescale BDM programmer
and a suitable development environment, the MCU
firmware can be freely modified and reprogrammed.
NCV7381 Pin Connections
V
CC
BP
BM
GND
WAKE
V
BAT
ERRN
RxEN
16
15
14
13
12
11
10
9
NCV7381
INH
EN
V
IO
TxD
TxEN
RxD
BGE
STBN
1
2
3
4
5
6
7
8
FB20100921.4
Board Hardware
The board consists of MCU with integrated 2-channel
FlexRay communication controller interconnected with two
separate FlexRay bus drivers (NCV7381), two switchable
voltage regulators and peripherals. The board is prepared for
various modifications in power supply concept and FlexRay
bus termination, and allows simple extension of the system
by unused MCU pins. USB interface provides compatibility
with standard PC. The address of each board can be easily
modified by address switch what allows creating complex
FlexRay network without need of reprogramming the MCU.
Implemented High Speed CAN interface can be used as
a diagnostic interface in a network built from several nodes.
For evaluation purposes NCV7381 is populated with several
LED diodes and most of the bus driver signals are
comfortable accessible to oscilloscope probes.
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