User's Guide SLLU158 – December 2011 CAN EVM User Guide This User Guide details the CAN EVM (Controller Area Network Evaluation Module) transceiver operation. It comes with the SN65HVD255 CAN transceiver factory installed. The CAN EVM may be user-reconfigured for use with the all TI CAN transceiver families: SN65HVD23x, SN65HVD25x, SN65HVD10x0 and SN65HVDA54x by replacing the transceiver and setting jumpers on the EVM as outlined in this document.
Introduction 1 Introduction 1.1 Overview www.ti.com Texas Instruments offers a broad portfolio of High Speed (HS) CAN transceivers compatible with the ISO11898-2 High Speed CAN standards. These include 5V VCC only, 3.3V VCC only, 5V VCC with I/O level shifting and galvanic-isolated CAN transceivers. These CAN transceiver families include product mixes with varying features such as low power standby modes with and without wake up, silent modes, loop back and diagnostic modes.
TB1 2 1 2PIN_TERMINAL_BLOCK Header 10x1 1 JMP2 VRXD D3 LED R20 330 C8 4.7uF R6 DNI C10 10uF VCC VCC Place near DUT Pint C5 DNI R5 DNI C11 1uF R10 0 C12 .1uF C3 DNI VCC TP1 Test Point TP7 Test Point TP9 Test Point R13 0 TP10 Test Point 1 Copyright © 2011, Texas Instruments Incorporated 1 VCC VCC 1 1 VCC 4 3 2 1 C1 DNI STB SPL RXD TP8 Test Point 0 R19 0 R17 0 5 6 7 8 R4 SN65HVD1040 CANL Vcc GND CANH TXD U1 1 1 L1 2 1 4 R9 5 1 3 R18 4.
Introduction www.ti.com Table 1. Connection Type Description JMP1 4 pin jumper JMP2 10 pin header Connection for access to all critical digital I/O, supply and GND for driving the CAN transceiver externally with test equipment or interfaced to a processor EVM JMP3 4 pin header CAN bus connection (CANH, CANL) and GND JMP4 2 pin jumper Connect 120Ω CAN termination to the bus. Used separately for a single termination if EVM is at end of the CAN bus and termination isn’t in the cable.
2 EVM Setup and Operation www.ti.com 2 2 EVM Setup and Operation This section describes the setup and operation of the EVM for parameter performance evaluation. 2.1 2.1.1 Overview & Basic Operation Settings VCC Power Supply (TB1 or TP9 or JMP2) The basic setup of the CAN EVM uses a single power supply required to evaluate standard 5V or 3.3V single supply transceiver devices performance. For single-supply transceivers, connect the 5V or 3.
2 EVM Setup and Operation 2.1.6 www.ti.com MODE Select/ Pin 8 (JMP1, JMP2 or TP3) Pin 8 of the transceiver is normally a mode control pin of the device. Pin 8 of the device is routed to JMP1, JMP2 and TP7. 2.1.7 MODE - JMP1 configurations (3 way jumper) If using separate I/O inputs JMP1 will be used to configure pin 8 to a pull up to VCC or pull down to GND configuration. For most devices when Pin 8 is pulled to GND the device will be in “normal” or high speed mode.
2 EVM Setup and Operation www.ti.com 2.2 Using CAN Bus Load, Termination and Protection Configurations The CAN EVM is populated with two 120Ω power resistors selectable via jumpers between CANH and CANL. By using one, the EVM may be used as a terminated end of a bus. For electrical measurements to represent the total loading of the bus, use both 120Ω resistors in parallel to give the standard 60Ω load for parametric measurement.
2 EVM Setup and Operation 2.3 www.ti.com Using Customer Installable I/O options for Current Limiting, Pullup/Pulldown, Noise Filtering The CAN EVM has footprints on the PCB for the installation of various filtering and protection options to adapt the EVM to match CAN network topology requirements if the EVM is being used as a CAN node.
CAN EVM Configuration for SN65HVD255 (Factory Installed) www.ti.com 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.
Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods.
FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
【Important Notice for Users of this Product in Japan】 】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.
EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use.
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
