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The JT 2154 is an experiment board based on National Semiconductor’s STA111 device, aimed at users looking to utilise addressable bridge/multiplexors within their designs, and thus set-up ‘system level’ JTAG access. The unit can also be used in semi-permanent installations to expand the TAP (Test Access Port) count on JTAG Technologies controllers in order to address highly segmented designs. Built-in support for ScanBridge-type devices within ProVision allows easy set-up of TAP assignments and device addressing.

    • Use as 1:3 TAP multiplexor
    • Experimental platform for system-level JTAG
    • Features industry standard STA111 chip
    • Benefits

    • Experiment with ScanBridge technology before committing to a design
    • Adds additional, addressable TAP ports to any test set-up
    • Pin-to pin connections with JTAG Technologies JT 21×7 pods or JT 3705/USB
    • Can be powered from the pod or own connection
    • Primary TAP in and TAP out connections for stream configurations
    • Three secondary-TAPs with LED activity indicators
    • Standard JTAG 10-way IDC connectors used
    • 64 address options via on board DIP switch
    • Dimensions 105L x 65W x 15H mm, weight 45 g
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