Texas Instruments Corporation

Vitesse Semiconductor Corporation

Yung-Che Shih

Jeffrey E Koelling

David Christopher Sawey

Robert T Rumer

An apparatus associated with a device connected to a data loop processes data received from the data loop to determine whether data from the data loop is to be routed back to the data loop. The apparatus may determine how to route data based on an analysis of whether the device is authorized to participate in a conversation currently associated with the data loop. Thus, latency otherwise imparted by the device when the device processes the data may be avoided.

Data loop port acceleration circuit

The present invention includes a circuit for detecting voltage levels in an integrated circuit including a first reference voltage(324), a first differential amplifier(349) having an inverting input terminal connected to the first reference voltage, a non-inverting input terminal and an output terminal, a first transistor (356) having a control terminal connected to the output terminal of the first differential amplifier, having a first current handling terminal connected to a voltage supply terminal and having a second current handling terminal connected to the non-inverting input terminal of the first differential amplifier, a first load (358) device having a first terminal connected to the second current handling terminal of the first transistor and a second terminal, a second load device (360) having a first terminal connected to the second of the first load device and a second terminal connected to a second reference potential, a second differential amplifier (391) having an inverting input terminal, a non-inverting input terminal in connected to the first terminal of the second load device and having an output terminal, the output terminal providing voltage detection output signal, a second transistor (382) having a control terminal connected to the output terminal of the first differential amplifier, having a first current handling terminal connected to the voltage supply terminal and having a second current handling terminal connected to the inverting input terminal of the second differential amplifier, a third load device (386, 384) having a first terminal connected to the inverting input terminal of the second differential amplifier and having a second terminal connected to the point at which a voltage level is to be detected. This provides a highly stable voltage detection system.

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Plano, TX, United States of America

Yung-Che Shih