Texas Instruments Corporation

Baireddy Vijayavardhan

Himamshu Gopalakrishna Khasnis

Sudheer Prasad

Thomas N Zogakis

Arthur Miller

Krishnan Ramabhadran

Subhash Madireddy

An aspect of the present invention provides multiple switches in a transceiver, which enable pins provided for transmission and reception to be connected to either a transmit port or a receive port, as desired during operation. As a result, the transceiver can be auto-configured to connect the specific pin, on which signals are being received, to the receive port. Similarly, the transceiver can be auto-configured to connect the specific pin, on which the signals need to be transmitted, to the transmit port. Various design considerations in providing such switches are also described.

Auto-configuration to connect transmit and receive ports to corresponding ports on the other end irrespective of cable connection mis-match

System and method for a multi-standard sigma-delta modulator. A preferred embodiment comprises an integrator coupled to a signal input, wherein the integrator is configured to sum a difference between an input signal and an output of the sigma-delta modulator. A dithering circuit, also coupled to the signal input, is used to produce a dithering sequence. A summing point combines an output of the integrator and the dithering circuit while a quantizer converts the combined outputs into one of several discrete levels. The sigma-delta modulator further comprises a reset circuit to reset the sigma-delta modulator if the integrator becomes saturated. The sigma-delta modulator, as described, is compatible with G.Lite, ADSL, and ADSL+ variants of the digital subscriber line technical standards.

Method and circuit for multi-standard sigma-delta modulator

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Medak, India

Baireddy Vijayavardhan