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The specification for this development board is as follows:
A schematic is included here, along with the KiCAD data files, whcih are in KiCAD 6 format.
An expansion card featuring HDMI and I2S output on a 3.5mm jack has been built:
A further, unbuilt, expansion card has been designed for VGA output:
The PCBs are 4 layer boards. My boards were manufactured by JLCPCB.
The jumper mechanism to route the SPI signals which carry the configuration data from the programmer was borrowed directly from the Lattice’s iCE40 UltraPlus Breakout Board.
Any iCE40 compatible programmer should be useable. I built my own, out of a Pi Pico, the software for which is documented in another repo. The programmer has been used to program both the attached flash and the FPGA directly.
The header is a IDC10 in 100mil pitch. For the pinout refer to the schematic.
The design of the FPGA board is a tweaked version of the build I have on my bench, since it has some issues:
The following features have not been tested yet:
The best place to learn about this board is undoubtably my blog.
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