TLE9255WLC datasheet(9/100 Pages) INFINEON

9 / 100 page

Data Sheet

Rev. 1.02 2018-02-02

TLE9255W

High Speed CAN Functional Description

High speed CAN (HS CAN) is a serial bus system that connects microcontrollers, sensors and actuators for real-

time control applications. ISO 11898-2 (2016) describes the use of the Controller Area Network (CAN) within

road vehicles. According to the 7-layer OSI reference model the physical layer of a HS CAN bus system specifies

the data transmission from one CAN node to all other available CAN nodes within the network. The CAN

transceiver is part of the physical layer. The physical layer specification of a CAN bus system includes all

electrical specifications of a CAN network.

The TLE9255W supports:

• standard bus wake-up functionality

• CAN Partial Networking with selective wake-up functionality according to ISO 11898-2 (2016)

• CAN Flexible data rate (CAN FD) transmission up to 5 MBit/s

4.1

High Speed CAN Physical Layer

Figure 3

High speed CAN bus signals and logic signals

TxD

VIO

VCC

CANH

CANL

VCC

VDiff

RxD

VIO

Digital supply voltage

VCC

Transmitter supply voltage

TxD

Transmit data input from

the microcontroller

RxD =

Receive data output to

the microcontroller

CANH =

Bus level on the CANH

input/output

CANL =

Bus level on the CANL

input/output

VDiff =

Differential voltage

between CANH and CANL

VDiff = VCANH – VCANL

“dominant” receiver threshold

“recessive” receiver threshold

tLoop(H,L)

tLoop(L,H)

td(L)T

td(L)R

td(H)T

td(H)R

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