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XC-1A Hardware Manual (1.2)
2 XS1-G4 Device [A]
The XC-1A provides a single XS1-G4 device in a 512BGA package. The XS1-G4 device
contains four multithreaded XCore™ processing components with tightly integrated
support for communication, I/O and timing. The pins on XCore processors are
brought out of the package and connected to the card's components as follows:
Processor 0
Three red/green and four green LEDs
Four push-button switches
Speaker
SPI FLASH memory
Prototyping area
One 16-way I/O expansion header (16 I/O bits)
Processor 1, 2
Three red/green LEDs
One 16-way I/O expansion header (16 I/O bits)
Processor 3
Three red/green LEDs
Two 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-1A components is
provided in a separate tutorial [1].
3 User-configurable LEDs [B and C]
The XC-1A has 16 user-configurable LEDs. Four 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. The layout of the LEDs is shown on the following page.
www.xmos.com
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