Input/output data port with a parallel and serial interface
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United States of America Patent
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Jan 21, 1997
Grant Date -
N/A
app pub date -
Feb 4, 1994
filing date -
Feb 4, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention disclosed an input/output data port circuit which connects a parallel data bus with an input serial data bus and an output serial data bus. The input/output data port is selectively operable in either a linear mode or a buffered mode. The input/output port is comprised of an interface register that is connected to a parallel data bus, a serial input bus and a serial output bus; a temporary register that is serially connected to the interface register, an outbound register that is connected in parallel to the temporary register and serially connected to a serial bus; and an inbound register that is connected in parallel to the temporary register and serially connected to a serial, bus.
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