CONFIDENTIAL
Z3-DM8168-PCI-RPS
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V1.1
Z3 Technology, LLC ♦ 4701 Innovation Drive CB103 ♦ Lincoln, NE 68521 USA ♦ +1.402.323.0702
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For Ubuntu 10.x, use the following command to install the needed packages:
sudo apt-get install build-essential
sudo apt-get install autoconf automake libtool bison flex mtd-utils liblzo2-dev uuid-dev zlib1g-dev libpcre3-
dev
For Fedora Core, use the following command to install the needed packages:
sudo yum groupinstall 'Development Tools'
sudo yum install autoconf automake libtool bison flex mtd-utils mtd-utils-ubi lzo-devel libuuid-devel pcre-
devel
12.
PCI Express
12.1
About PCIe lanes and slots
The Z3-DM8168-APP-2x board is designed to be used as a PCI Express add-in card. The DM8168 chip
mounted on the module provides a PCI Express interface with 2 lanes, the PCI Express specification
standardizes on connectors for 1, 4, 8 and 16 lanes. The Z3-DM8168-APP-2x board is therefore designed
to mate with a 4-lane connector in order to allow the 2 lanes from the DM8168 processor to be active.
The PCI Express specification allows for plugging interface cards into any slot that provides at least as
many lanes as present in the interface card. Therefore, the PCIe spec allows you to plug the Z3-DM8168-
APP-2x board into any PCI Express slot that it will fit in – 4, 8 or 16 lanes.
The Z3-DM8168-PCI-RPS board set can also operate as 1 1-lane PCIe device. This means that if the
mechanical restrictions of inserting a big board into a small slot did not exist, it would also work. Since
this is a generic situation some motherboard vendors have included PCIe slots that have their backs open
to allow the insertion of board with more lanes than the connector. Although this
should
work well (for all
devices including the Z3-DM8168-PCI-RPS system) there is no guarantee that it will in fact work in all
situations.
The “PCI Express Card Electromechanical Specification” document section on “Card Interoperability” is
always a good reference. The document is available (for members) from the PCI Group at
http://www.pcisig.com/specifications/pciexpress/base
12.2
The PCI Express BIOS on the PC
When the PC is first powered up its BIOS performs some system tests and initialization, including PCI
Express initialization. The BIOS is required to assign resources to all peripherals on the system, including
those devices in PCI Express add-in cards, before it can proceed to boot the operating system. During this
initialization, the BIOS will determine allocation of memory addresses and interrupt lines, and use this
information to turn on each peripheral in a way that they don’t conflict with each other.
