High speed interconnect unit for digital data processing system
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United States of America Patent
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-
May 2, 1989
Grant Date -
N/A
app pub date -
Jul 24, 1986
filing date -
Jul 24, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital data processing system transfers information with an external device through an interconnect unit over a bus which includes separate sets of lines for transferring control information and transferring user information. The user information lines include bidirectional information transfer lines and undirectional antiparallel lines for transferring direction control signals and synchronization signals between the interconect unit and the external device, the direction control signals indentifying the direction of transfer over the information transfer lines, and the synchronization signals identifying when the transmitting unit has transmitted the signals and when the receiving unit has latched the signals. The control information lines include unidrectional antiparallel lines for transferring control information and a synchronization signal. The synchronization signal is transmitted when control information signals are being transmitted on the control information lines.
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