JT 2154 ScanBridge

JT 2154 ScanBridge Description:

The JT 2154 is an experiment board based on National Semiconductor's STA111 device, aimed at users looking to utilise addressable multiplexors within their designs, and thus set-up 'system level' JTAG access. The unit is also widely used in semi-permanent installations to expand the TAP (Test Access Port) count on JTAG Technologies testers 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  

Applications:

Use the JT 2154 to multiply the TAPs from any JTAG Technologies boundary-scan controller or use as the basis for ScanBridge/system-level experimentation. Compact design allows for siting inside test interface/fixture.

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 21x7 pods or JT 3705/USB
• Can be powered from the pod or own connection

Specifications:

• 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