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This paper describes a newly developed automatic direction-control-scheme for bi-directional bus repeaters with dynamic-collaborative-driving. Repeater directions are rapidly determined by detecting the direction of enable signal propagation through an additional enable signal line, which is driven by dynamic collaborative-drivers. Application to an on-chip peripheral bus reduced control circuits to half and a dynamically reconfigurable processor (DRP, a kind of innovative reconfigurable logic LSI) application could reduce configuration context data and transistor count to 25%. Experimental results from a 0.18-μm CMOS implementation indicate that the proposed scheme improves signal propagation time four times faster than a conventional 3-state bus driver scheme.