Faraday Technology Corporation

Taiwan Semiconductor Manufacturing Comp. Ltd.

Ling Chen

Xiao-Dong Fei

Andrew Chao

Shye-Lin Wu

Prateek Kumar Goyal

Yin-Fu Lin

Wei Liu

Fu-Chien Tsai

A receiver device and an eye pattern-based control parameter adjustment method are provided. The receiver device includes a receiving circuit and a control circuit. The control circuit performs an iterative operation to determine an optimized control parameter, and updates current control parameters of the receiving circuit to the optimized control parameter after completing the iterative operation. The receiving circuit processes an input signal according to the current control parameters to generate recovered data. The iterative operation includes: updating the current control parameters of the receiving circuit to candidate control parameters; checking a size relationship between an optimized eye mask and a current eye pattern; and increasing the optimized eye mask according to the current eye pattern when the optimized eye mask does not conflict with the current eye pattern, and updating the optimized control parameters to the candidate control parameters corresponding to the new eye mask.

Receiver device and eye pattern-based control parameter adjustment method

An apparatus for performing baseline wander correction (BLWC) with the aid of differential wander current sensing includes filters and a correction circuit. The filters are positioned in a front-end circuit of a receiver and coupled to a set of input terminals of the receiver, and filter a set of input signals on the set of input terminals to generate a set of differential signals on a set of secondary terminals, for further usage by the receiver. The correction circuit is positioned in the frontend circuit and electrically connected to the set of input terminals and the set of secondary terminals, and performs BLWC on the set of differential signals according to the set of input signals. In the correction circuit, amplifiers and resistors form a differential wander current sensor to sense differential wander current, and a set of current mirrors generate corresponding baseline wander compensation current to perform BLWC.

Apparatus for performing baseline wander correction with aid of differential wander current sensing

The present invention provides a clock data recovery apparatus and an operation method thereof. The clock data recovery apparatus includes an equalizer, a phase detector, a charge pump, and an oscillation circuit. The equalizer is configured to equalize raw data to generate equalized data. The phase detector is coupled to the equalizer to receive the equalized data. The phase detector is configured to generate a detection result according to the equalized data. The phase detector performs pattern-filtering on the equalized data to filter out at least one pattern. The charge pump is coupled to the phase detector to receive the detection result. The charge pump is configured to generate a control signal according to the detection result. The oscillation circuit is coupled to the charge pump to receive the control signal. The oscillation circuit is configured to generate a clock signal according to the control signal.

Clock data recovery apparatus and operation method thereof

An apparatus for performing decision feedback equalizer (DFE) adaptation control is provided. The apparatus includes arithmetic circuits, slicers, sample and hold circuits, a phase detector and a control circuit for related operations. The control circuit generates parameters at least according to an error sample value and data sample values, and dynamically updates the parameters based on at least one predetermined rule to perform the DFE adaptation control. The parameters include a first parameter, another parameter and a factor adjustment parameter. Regarding at least one data pattern, the control circuit selectively replaces the error sample value with a predetermined value according to whether a temporary storage value of the error sample value conforms to a predetermined condition to control the other parameter and the first parameter, in order to prevent triggering an unstable effect and thereby prevent abnormal operations.

Apparatus for performing decision feedback equalizer adaptation control

A method of fabricating high density multiple states mask ROM cells on a semiconductor substrate is disclosed. The method comprises the following steps. Firstly, the array of buried bit line is formed on semiconductor substrate. Then, a CVD oxide film is deposited on said substrate. The first coding mask is applied to dip out the CVD oxide film on the uncoded regions. Then, a thin gate oxide film is thermally grown on said substrate. At the same time, the CVD oxide film is densified and the N&plus;source/drain junction of buried bit lines is formed. A conductive layer is then deposited on all area followed by defining the word lines. The second coding process is performed by using a high energy boron ion implantation through the conductive layer and gate oxide film into said predetermined regions. By combination of the first CVD oxide coding process and the second boron ion implantation coding process, a high density mask ROM with a multiple states is fabricated.

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Hsinchu, Taiwan

Ling Chen