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XC-1 Hardware Manual (1.3.2)
2 XS1-G4 Device [A]
The XC-1 provides a single four core XS1-G4 device in a 512BGA package. Each
XCore is programmable and comprises an event-driven multi-threaded processor
with tightly integrated general purpose I/O pins and 64 KBytes of on-chip RAM. The
pins on XCore0 and XCore2 are brought out of the package and connected to the
card's components as follows:
Processor 0
Twelve red/green and four green LEDs
Four push-button switches
Speaker
Processor 2
Three 16-way I/O expansion headers (24 I/O bits)
One 16-way I/O expansion headers (16 I/O bits)
The processors have ports that are directly connected to the I/O pins. Examples of
how to write software that interfaces over these ports with the XC-1 components is
provided in a separate tutorial [1].
3 User-configurable LEDs [B and C]
The XC-1 has 16 user-configurable LEDs. Four of green LEDs are positioned next
to the four push-buttons (collectively referred to as button-LEDs) and contain green
diodes. The other 12 LEDs are positioned around the XS1-G4 in a circle (collectively
referred to as clock-LEDs) and contain red/green diodes. A Roman numeral is printed
next to each LED. Each of the LEDs can be driven by software. The layout of the LEDs
is shown on the following page.
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