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particle-iot / core

Hardware design files for the Spark Core, a tiny Wi-Fi development kit.
https://www.spark.io/
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Route traces under Wi-Fi module on third layer #17

Closed zsup closed 11 years ago

zsup commented 11 years ago

The datasheet for the CC3000 suggests extending the ground plane across the entire CC3000, and routing all traces on the third layer (the power plane). While our real estate constraints make it impossible to follow this to the letter, we should attempt to remove traces from the top layer under the CC3000 as much as possible.

andyw-lala commented 11 years ago

In my branch, there;s a ground Cu pour on the top layer, so it should pick up the slack when you move traces off the top layer. We could trim the 3V3 pour and stop it around the STM32, and route signal traces there instead. Just make the traces to the flash chip a decent width to keep the transient response good.

On Mon, Jul 1, 2013 at 7:00 PM, cazzo notifications@github.com wrote:

The datasheet for the CC3000 suggests extending the ground plane across the entire CC3000, and routing all traces on the third layer (the power plane). While our real estate constraints make it impossible to follow this to the letter, we should attempt to remove traces from the top layer under the CC3000 as much as possible.

— Reply to this email directly or view it on GitHubhttps://github.com/sprk/core/issues/17 .

Andy