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Advisor(s)
Abstract(s)
Debugging mixed-signal circuits is usually seen as a
complex task due to the presence of an analog part and the
necessary interaction with a digital part. The use of debug
and test tools that require physical access suffers from the
same restrictions that led to other solutions based on
electronic access, especially for digital circuits, due to the
increasing operating frequencies and miniaturization scales.
This is particularly the case that led to the emergence and
wide acceptance of the IEEE1149 family of test
infrastructures, which relies on an electronic test access
port. While the IEEE1149.4 test infrastructure enables the
structural and parametric test of mixed-signal boards, its use
is still far from reaching a wide acceptance, namely due to
the lack of alternative applications, such as debugging, as it
is the case in the 1149.1 domain. This work describes a way
to support debug operations in 1149.4 mixed-signal circuits,
in particular a built-in condition detection mechanism able
to support internal watchpoint/breakpoint operations.
Description
Keywords
Debugging IEEE1149 family