File name gx1_pc133_layout.pdf
AMD GeodeTM GX1 Processor
PC133 Layout Recommendations
1.0 Scope 2.0 Introduction
This document provides the layout designer recommended The intended audience for this document is a design engi-
layout methodologies and guidelines when implementing neer using the Geode GX1 processor in a targeted design.
PC133 topology with the AMD GeodeTM GX1 processor. The recommendations contained in the following sections
This PC133 guideline only applies to the GX1 processor are intended to assist the design engineer in supervising a
(i.e., not GXm or GXLV processors). For topics not specifi- successful layout, as well as to provide default constraints
cally covered in this document, standard high-speed digital that may be entered into the design's database. Some key
design methodologies should be used in order to maintain sections may prove useful as a reference for the layout
as much design margin as possible and to ensure a quality designer during layout.
PCB (printed circuit board).
Certain assumptions are made throughout this document.
This document specifically references or assumes knowl- For example, the target stackup is a four-layer PCB with
edge of the following sources: two signal layers and two plane layers (2S2P). Also, com-
ponents are not necessarily constrained to be placed on