XR31233 / XR31234 / XR31235
Evaluation Board User’s Manual
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Introduction
Exar’s XR31233 / XR31234 / XR31235 EVB evaluation
board provides a platform on which to examine the features
and performance of the XR31233 / XR31234 / XR31235
CAN Bus transceivers. The XR31233 / XR31234 / XR31235
EVB is a 2 layer pcb that allows for access to all the device
pins.
Hardware Setup
To use the Evaluation Board, the following components are
required:
1. XR31233 / XR31234 / XR31235 EVB evaluation board
2. Power supply
3. Signal source
4. Oscilloscope for data analysis
5. Digital Multimeter
Refer to the product data sheet for additional information.
Figure 1:
Top View of XR31233 / XR31234 / XR31235 EVB
Figure 2: Block Diagram XR31233 / XR31234 / XR31235 - EVB
Evaluation Board Overview
The block diagram shown in Figure 2, illustrates the connection points for the CAN Bus, power and ground, TTL/CMOS
driver input, TTL/CMOS receiver output and the mode pins.
TTL/CMOS
Driver Input
TTL/CMOS
Receiver Output
GND
PWR
DIN
ROUT
CANL
CANH
CAN Bus
RS Mode Selection
DUT
LBK/EN/AB Selection