Microchip Technology Inc.

Other

Gaurang Kavaiya

Igor Wojewoda

Brian E Boles

Mark E Ainsworth

Tim Phoenix

Steve Bradley

Rick Harding

A programmable system includes programmable analog and digital components that, when configured by a processing device, implement a line driver to transmit differential signals over multiple drive lines and a line receiver to receive differential signals over multiple receive lines. A system includes a line receiver to receive differential signals from receive lines with multiple input pads and to convert the differential signals into a single-ended signal. The system further includes a digital communication device to receive the single-ended signal from the line receiver and extract received data from the single-ended signal. The system includes a line driver to receive transmission data from the digital communication device, convert the transmission data into differential signals, and provide the differential signals to multiple output pads for transmission over drive lines.

Line driving and receiving system

A mixed signal device having an analog-to-digital converter (ADC) with offset and gain calibration using internal voltage references whereby the digital processor calibrates out offset and gain errors in the analog-to-digital converter by adjusting the analog input amplifier gain and offset or with software compensating the digital representations of the voltages measured. Two different known voltage values are used in determining the offset and gain adjustments needed to calibrate the ADC against the two know voltage values. The mixed signal device may further comprise a Bandgap voltage reference having an accurate known voltage value. Wherein the Bandgap voltage reference may be used for further offset and gain calibration of the ADC to produce substantially absolute voltage values.

Analog-to-digital converter offset and gain calibration using internal voltage references

Peripheral functions of an integrated circuit device may be pooled and dynamically mapped to available external input-output connections of the integrated circuit device by using a set of configuration registers. To provide system robustness, the configuration registers may implement various levels of write protection, error correction and monitoring circuitry. One or more peripheral output functions may be mapped to one or more external output connections. Not more than one output function may be active at the same time on the same output connection. Outputs and inputs may be mapped to the same external input-output connection with or without the output being controllable for placement into an inactive state, e.g., high impedance or open collector. When the input is required to receive external data over the external input-output connection, the output may be placed into the inactive state.

Dynamic peripheral function remapping to external input-output connections of an integrated circuit device

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Bothell, WA, United States of America

Gaurang Kavaiya