Data processing system having a multi-function scalable parallel input/output port

• Main Authors: HING LEUNG YIU, JEFFERSON L. GOKINGKO, GLEN J. ZOERNER
• Format: Patent
• Language: Chinese; English
• Published: 01.12.1998
• Subjects: CALCULATING; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION ANDCOMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION ANDCOMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWNENERGY USE; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PHYSICS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

A data processing system implemented on a single integrated circuit, the data processing system having a multi-function input/output port, the multi-function input/output port comprising a plurality of input/output port circuits, each of the plurality of input/output port circuits comprising: a multiplexer having a first input terminal for receiving a first data signal, a second input terminal for receiving a second data signal, a control terminal for receiving a select signal, and an output terminal; a buffer circuit having an input terminal coupled to the output terminal of the multiplexer, a control terminal for receiving an enable signal, and an output terminal, the buffer circuit controlling a pull-up transistor for increasing a voltage at an output terminal of the buffer circuit, and controlling a pull-down transistor for reducing the voltage at output terminal of the buffer circuit; an input/output terminal coupled to the output terminal of the buffer circuit, for providing the first or second data sig