Apalis Carrier Board Design Guide
Toradex AG l Altsagenstrasse 5 l 6048 Horw l Switzerland l +41 41 500 48 00 l
l
Page | 6
1
Introduction
1.1 Overview
This document is designed to guide users through the development of a customized carrier board
for the Apalis Computer module. It describes the different interfaces and contains reference
schematics. 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 between
different Apalis modules. These interfaces are described in the datasheet of each computer
module. Some Apalis modules do not feature the full set of standard interfaces. Therefore, it is
strongly recommended to read the datasheets of the modules that are intended to be used with
the carrier board.
The Apalis Computer module features new high-speed interfaces such as PCI Express, SATA, HDMI
and LVDS which require special layout considerations regarding trace impedance and length
matching. Please read carefully the Toradex Layout Design Guide for additional information to the
routing of these interfaces.
1.2 Additional Documents
1.2.1
Layout Design Guide
This document contains layout requirement specifications for the high-speed signals and helps to
avoid problems related with the layout.
http://developer.toradex.com/hardware-resources/arm-family/carrier-board-design
1.2.2
Apalis Module Datasheets
For every Apalis Module, there is a datasheet available. Among other things, this document
describes the type-specific interfaces and the secondary function of the pins. Before starting the
development of a customized carrier board, please check in this document whether the required
interfaces are really available on the selected modules.
https://www.toradex.com/products/apalis-arm-computer-modules
1.2.3
Apalis Module Definition
This document describes the Apalis Module standard. It provides additional information about the
interfaces.
http://docs.toradex.com/100240-apalis-module-specification.pdf
1.2.4
Toradex Developer Centre
You can find a lot of additional information in the Toradex Developer Centre, which is updated
with the latest product support information on a regular basis.
Please note that the Developer Centre is common for all Toradex products. You should always
check to ensure if information is valid or relevant for the Apalis modules.