APPLICATION NOTE ATA6560 - CAN Transceiver VHDL-AMS Demonstration (Level 1) ATAN0133 Introduction This document contains the documentation for the simulatable demonstration file of the simulation-runtime-optimized behaviorally modeled Atmel® high-speed CAN transceiver ATA6560. This “Demo Level 1” model is intended to be used only for bus signal integrity checks and does not cover the full functionality of the real transceiver device. Terms, Definitions and Abbreviations Table 1. Terms, Definitions and Abbreviations Short Name Definition BUS CAN BUS CANH CAN BUS high channel CANL CAN BUS low channel CM Common mode = (CANH + CANL)/2 CAND Differential mode = (CANH – CANL) RXD Receiver pin / receiver signal TXD Transceiver pin / transceiver signal VCC Supply pin / supply level / supply signal GND Ground pin / ground level / ground signal TEMP High level model parameter which selects one of three possible scenarios 9393A-AUTO-06/15 1. Parameters The model is parameterized regarding the high, low and typical characteristics of the device. The interface contains the model parameter “TEMP”. The following values are possible. Table 1-1. Parameter “TEMP”, Possible Values “TEMP” value 2. Description –1 This setting covers the low temp behavior based on real device measurements and minimal characteristics as stated in the device datasheet 0 This setting covers the room temp behavior based on real device measurements and typical characteristics as stated in the device datasheet 1 This setting covers the high temp behavior based on real device measurements and maximal characteristics as stated in the device datasheet Implementation This demonstration file is intended to show the basic configuration / application for a Level 1 ATA6560 VHDL-AMS Model. Its characteristics are shown in Figure 2-1. It is possible to run the demo file from a test-bench which calls this demo and make reference of all the possible parameters of interest as for example “TEMP”. The values of VCC, Load, etc. are already fixed in the demo file, but they could be shifted from the architecture area to the entity area and be called from a test-bench file too. The same applies to the signal TXD as well. Figure 2-1. Running the Demonstration File for Level 1 Implementation 2 ATAN0133 [APPLICATION NOTE] 9393A–AUTO–06/15 XXXXXX Atmel Corporation 1600 Technology Drive, San Jose, CA 95110 USA T: (+1)(408) 441.0311 F: (+1)(408) 436.4200 | www.atmel.com © 2015 Atmel Corporation. / Rev.: 9393A–AUTO–06/15 Atmel®, Atmel logo and combinations thereof, Enabling Unlimited Possibilities®, and others are registered trademarks or trademarks of Atmel Corporation in U.S. and other countries. Other terms and product names may be trademarks of others. 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