Datasheet

CANH

CANL

TXD

GND

RXD

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CAN EVM Configuration for SN65HVD255 (Factory Installed)

3 CAN EVM Configuration for SN65HVD255 (Factory Installed)

The SN65HVD255 meets ISO1189-2 High Speed CAN (Controller Area Network) Physical Layer standard

(transceiver). It is designed as a next generation CAN for the ‘251 & ‘1050 pinout. It has very fast loop

times with a wide range of bus loading allowing for data rates up to 1 megabit per second (Mbps) in long

and highly loaded networks and higher data rates in small networks. The device includes many protection

features providing device and CAN network robustness. The device has two modes: normal mode and

silent mode selected on pin 8.

Figure 3. SN65HVD255 Basic Block Diagram & Pin Out

Table 6. EVM Connection Settings for SN65HVD255

Connection Description

JMP1 Mode selection: Pull up to V

for Silent Mode, Pull down to GND for normal mode

Connection for access to all critical digital I/O, supply and GND if being externally driven by test equipment or

JMP2

interfaced to a processor EVM. Note: ensure that JMP1, JMP6 & TB1 settings don't conflict with JMP2 if it is used.

JMP3 CAN bus connection (CANH, CANL) and GND as necessary if interfacing EVM to a CAN network

JMP4 Connect if necessary for a single CAN network termination

JMP5 Connect if necessary for in parallel with JMP4 to get a 60Ω load to measure CAN parametrics

JMP6 N/A: SN65HVD255 is no connect on pin 5 of the transceiver

SLLU158– December 2011 CAN EVM User Guide

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