Everest CORE - Product Manual |
Application Guide
INGENIA | 08/01/2019
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HDI designs with strong size constraints can benefit from placing components directly under the Everest CORE,
whenever they are
under 1 mm height
. However, this has to be done very carefully, not only with a total certainty
on the height of the component and its tolerance, but also being cautious on the nature of the tracks to cross this
area, as it is populated with the main Everest CORE processor, which can behave both as a "victim" or as an
"aggressor", from the EMC point of view.
As an example, do not lay the copper connected to the power pins towards the inside of the Everest CORE, but
towards the outside. This would prevent the power signals from affecting sensitive circuits of the Everest CORE.
7.3.3. Layout considerations
The attached snippet includes the footprints of the mating and fixing components, as well as a basic layout
proposal. Only signal traces are represented, with the purpose of pointing the most appropriate way of leaving the
Everest CORE. As a rule of thumb, it is preferred to not direct the tracks towards the inside of the Everest CORE, but
outwards.
