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Posted - 17 Oct 2005 :  09:48:06  Show Profile  Email Poster
Sphere User's Manual (rev 3, PDF 737kB)

The Sphere is a full-featured single board computer driven by the highly integrated Cirrus Logic EP9315 ARM system-on-chip processor. Among other features, the EP9315 supports Ethernet, USB, EIDE, LCD displays and includes a floating point math engine optimized for digital music compression and decompression.

The Sphere is designed to meet the needs of embedded and graphical systems developers whose applications require low power, a small form factor and an aggressive price point.

Changes, updates and errata for this document will appear as replies to this topic as they become available.

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1519 Posts

Posted - 06 Jul 2006 :  21:41:30  Show Profile  Email Poster
Update: GPIOs Configured as Inputs have Pull-ups

When configured as inputs, the Cirrus Logic EP9315 digital I/Os enable software 3.3V pull-ups. Unconnected pins will read a logic high when configured as inputs.

We will post further details (e.g. impedance of the pull-ups) as we receive them from Cirrus Logic.
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