Serial i/o using jtag tck and tms signals

作者: Lee D. Whetsel

DOI:

关键词: Controller (computing)General purposeData signalTerminal (electronics)Computer hardwareClock signalComputer scienceEmbedded systemSerial communication

摘要: The present disclosure describes a novel method and apparatus of using the JTAG TAP's TMS TCK terminals as general purpose serial Input/Output (I/O) bus. According to disclosure, terminal is used clock signal bidirectional data allow communication occur between; (1) an IC external controller, (2) between first second IC, or (3) core circuit within IC.

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