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+ An FPGA is like a hardware emulator. It can change itself so that it can take on the characteristics of any other digital logic.
+
+ FPGAs are measured in resources called LUTs or LCs.
+
+ Fomu is an FPGA that fits in your USB port. It has foru buttons, 2 MB of SPI flash, an RGB LED, and an ICE40UP5K with 5280 LCs. It also has 128 kB of dedicated RAM, not counting the block RAM.
+
+ Unlike many other PCBs, Fomu does not have a separate USB controller chip. This means that any projects that want to use the USB port must include a USB softcore.
+
+ This is Fomu EVT1. This is the original stretch prototype of Fomu. The schematics are the same, but much has changed:
+
+ * Name changed from Tomu-FPGA to Fomu
+ * Package changed from SG48 to WLCSP32
+
+ Additionally, some patches were needed to get this PCB working:
+
+ * SO-8 for SPI flash was too small
+ * Crystal footprint was upside-down
+
+ These are yours to take home with you!
+
+ Differences between EVT1 and EVT3:
+
+ * Silkscreen on Raspberry Pi header
+ * Populate Raspberry Pi header
+ * Add PMOD pins to touchpads
+ * Swap PMODa pins for I3C
+
+ Fomu aims to be accessable on three levels:
+ Outline
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Workshop Outline
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+
+ What is an FPGA?
+ What is Fomu?
+ What is this PCB?
+ Levels of Fomu
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+