New Designs Based On Module Board; Power Supply; Debug - XMOS xCORE XA Hardware Manual

4 New Designs Based on Module Board

IN TH I S C H A P T ER

Power Supply

Debug

I/O
There are a number of sections of the design of the xCORE-XA Module Board
that have been optimized for flexibility to cover as many use cases as possible.
Therefore some consideration may be required in what to leave out or change in
a custom design. Some of the important points to consider are dealt with in this
section.
Some general points to consider when implementing your own design are:
Always check the datasheet of the xCORE device. In the case where the reference
design and datasheet conflict, the datasheet presides.
XMOS datasheets contain additional hardware design requirements and guide-
lines that are not covered in this document, which users of XMOS hardware
reference designs must ensure are followed.
The presence of a third party device in an XMOS hardware reference design does
not make any statement about its general availability. You must make your own
arrangements to ensure that all components can be sourced in the required
volumes.
4.1 Power Supply
For custom designs the minimum power supply requirements for the xCORE-XA
device should be met. A 1.0V supply, capable of supplying at least 500mA is
required for the xCORE-XA core, and a 3.3V supply, capable of supplying at least
100mA is required for the xCORE-XA I/O and ARM core supply. The required
capability of the 3.3V supply will vary depending on the I/O usage and may need to
be higher to supply peripheral devices. The 1.0V, 3.3V supplies and reset should
all be sequenced in accordance with the requirements stated in the datasheet.
4.2 Debug
In a custom design debug and programming interfaces for both the xCORE cores
and the ARM core will be required. A standard XSYS connection should be added
to debug and program the xCORE cores by way of an XTAG debug adapter. A
standard SWD interface should be implemented, for connection to an external
debug adapter.
XM006580A