Platform Stack-Up and Component Placement Overview
32
Design Guide
3.2
Platform Stack-Up
shows the recommended platform stack-up. All layers are 1 oz copper. The processor
requires 2 oz of copper to deliver power and 2 oz of copper to deliver ground. Vias are 10 mil
finished hole with 35 mil anti-pads and 24 mil pads.
Route signal layers as asymmetric stripline on layers 2, 4, 5 and 7. The signal layers must reference
ground on layer 3 or layer 6 only. Route signals on layers 4 and 5 orthogonally to reduce crosstalk
between the layers.
Intel strongly recommends that system designers use the stack-up shown in
and
recommendations in
when designing their boards. Intel realizes numerous ways exist to
achieve these targeted impedance tolerances; contact your board vendor for these specifics. Intel
encourages platform designers to perform comprehensive simulation analysis to ensure all timing
specifications are met. This is particularly important if a design deviates from the design guidelines
provided.
Figure 3-1. Intel
®
E7500 Chipset Customer Reference Board System Placement Example
Содержание Xeon
Страница 24: ...Introduction 24 Design Guide This page is intentionally left blank ...
Страница 30: ...Component Quadrant Layout 30 Design Guide This page is intentionally left blank ...
Страница 34: ...Platform Stack Up and Component Placement Overview 34 Design Guide This page is intentionally left blank ...
Страница 52: ...Platform Clock Routing Guidelines 52 Design Guide This page is intentionally left blank ...
Страница 66: ...System Bus Routing Guidelines 66 Design Guide This page is intentionally left blank ...
Страница 118: ...Intel 82870P2 P64H2 118 Design Guide This page is intentionally left blank ...
Страница 146: ...I O Controller Hub 146 Design Guide This page is intentionally left blank ...
Страница 148: ...Debug Port 148 Design Guide This page is intentionally left blank ...
Страница 210: ...Schematic Checklist 210 Design Guide This page is intentionally left blank ...
Страница 220: ...Layout Checklist 220 Design Guide This page is intentionally left blank ...
Страница 222: ...Schematics 222 Design Guide This page is intentionally left blank ...