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xCORE XA Module Board Hardware Manual
2.3.2 Debug System Disable
The debug system could be powered down(OFF) or enabled (ON) by setting the
jumper J13. This allows the board in a standalone mode with typical power usage.
2.4 xCORE-XA Boot
The boot mode jumpers J14 & J16 can be selected to boot from ARM flash using
LINKS or through external Flash or from xTAG(MSEL). This allows to develop xCORE
code independent of ARM code and experiment with xCORE.
2.5 XMOS Links
This board contains two 5-bit xCONNECT links XLA and XLB which can be used
for connecting more xCORES together. The 2-bit xCONNECT link XLC is used for
xSCOPE.
2.6 Reset
The reset can be applied to the board in two ways. Manual reset can be generated
using push button SW1. In debug mode the reset from xTAG resets the whole
system. The reset is connected to all I/O headers so any circuitry on them can be
reset.
2.7 Clocking
There are two clock sources available in the board. One provides a 48MHZ system
clock to both ARM and xCORE. The other is a 32.768 KHZ clock connected to ARM
to allow low energy mode applications.
2.8 I/O
2.8.1 xCORE Headers
The xCORE signals are identified on the silkscreen layer of the Module Board, the
table below lists their relationship to the internal ports.
XM006580A
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