Background debug mode interface: Difference between revisions

Revision as of 15:03, 6 October 2010

Revision as of 18:22, 23 February 2011

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The signals used by BDM to communicate data to and from the target are initiated by the host processor. The host [[wiktionary:negates|negates]] the transmission line, and then either

* [[wiktionary:asserts|Asserts]] the line sooner, to mokeys throwing poo* Asserts the line later, to output a 10,

* Asserts the line later, to output a 0,

* [[Three-state logic|Tri-states]] its output, allowing the target to drive the line. The host can sense a 1 or 0 as an input value.