Light-APF27Dev

Introduction

Using apf27 for a custom hobbyist project is very expensive. Because it's necessary to buy a big and expensive extension card named APF27-dev (152€ min) with the base module apf27 (127€ min), very few hobbyist use it.

The aim of this project is to make a little PCB with minimum extension devices to have an extension card that cost 50€ max. The apf27dev PCB design will be reused; surface will be divided by 2 to speed development.

Caracteristics

Maximum of I/Os and ports must be available on light-apf27dev :

• 1 USB OTG (Only host ar real OTG TBD)
• 1 ethernet

Header that correspond on apf27Dev to :

• Wireless connector J8 and J9
• FPGA connector J19 and J20
• User extension interface J22

Necessary devices:

• 1 power circuit
• 1 reset button
• 3-pin header for debug uart

And maybe but not sure:

• SD connector
• second USB host