Browse Prior Art Database

Controller Interconnections

IP.com Disclosure Number: IPCOM000052419D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11

Publishing Venue

IBM

Related People

Authors:
Bailey, JA Krol, PG Lowy, JA [+details]

Abstract

A controlling unit is connected to a controlled unit via three sets of lines. A first set of lines, A, carry data signals; a second set of lines B carry control signals; a third set of lines, AB, are switched between carrying data signals and control signals, depending upon the phase of operation. During a selection or control phase of operation, lines AB can carry control signals, such as tag signals. During a data processing phase of operation, lines AB carry data signals. This arrangement provides for greater data bandwidth and control bandwidth, with a minimal number of lines.