Apalis Carrier Board Design Guide - Toradex

Apalis Carrier Board Design Guide1 Introduction1.1 OverviewThis document is designed to guide users through the development of a customized carrier boardfor the Apalis Computer module. It describes the different interfaces and contains referenceschematics. This document reflects only the standardized primary function of the Apalis modules.The type-specific interfaces and secondary functions are not guaranteed to be compatible betweendifferent Apalis modules. These interfaces are described in the datasheet of each computermodule. Some Apalis modules do not feature the full set of standard interfaces. Therefore, it isstrongly recommended to read the datasheets of the modules that are intended to be used withthe carrier board.The Apalis Computer module features new high-speed interfaces such as PCI Express, SATA, HDMIand LVDS which require special layout considerations regarding trace impedance and lengthmatching. Please read carefully the Toradex Layout Design Guide for additional information to therouting of these interfaces.1.2 Additional Documents1.2.1 Layout Design GuideThis document contains layout requirement specifications for the high-speed signals and helps toavoid problems related with the layout.http://developer.toradex.com/hardware-resources/arm-family/carrier-board-design1.2.2 Apalis Module DatasheetsFor every Apalis Module, there is a datasheet available. Among other things, this documentdescribes the type-specific interfaces and the secondary function of the pins. Before starting thedevelopment of a customized carrier board, please check in this document whether the requiredinterfaces are really available on the selected modules.https://www.toradex.com/products/apalis-arm-computer-modules1.2.3 Apalis Module DefinitionThis document describes the Apalis Module standard. It provides additional information about theinterfaces.http://docs.toradex.com/100240-apalis-module-specification.pdf1.2.4 Toradex Developer CentreYou can find a lot of additional information in the Toradex Developer Centre, which is updatedwith the latest product support information on a regular basis.Please note that the Developer Centre is common for all Toradex products. You should alwayscheck to ensure if information is valid or relevant for the Apalis modules.http://www.developer.toradex.comToradex AG l Altsagenstrasse 5 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l info@toradex.com Page | 6