Mediatek Corporation

Qui-Ting Chen

Yan-Bin Luo

Chih-Chien Hung

Huai-Te Wang

Shang-Ping Chen

A termination circuit is provided. The termination circuit includes a first receiving terminal, a second receiving terminal, a first resistive device, a second resistive device, a third resistive device, a fourth resistive device and a first switch. The first receiving terminal receives a first data signal. The second receiving terminal receives a second data signal. The first resistive device is coupled between a supply voltage and the first receiving terminal. The second resistive device is coupled between the supply voltage and the second receiving terminal. The third resistive device is coupled between the first receiving terminal and a first node. The fourth resistive device is coupled between the second receiving terminal and the first node. The first switch is coupled between the supply voltage and the first node.

Termination circuits capable of receiving data signals in different formats for performing impedance matching

A memory controller is provided. The memory controller is powered by first and second power source and includes an input/output pin, a driver circuit, a terminal resistor, and an input buffer. The driver circuit is coupled to the input/output pin and capable of providing to a writing signal to the input/output pin. The terminal resistor is coupled between the input/output pin and the first power source. The input buffer is coupled to the input/output pin and capable of receiving a reading signal from the input/output pin. No terminal resistor is coupled between the input/output pin and the second power source.

Low power memory controllers

A tunable equalizer with a tunable equalizer frequency response is provided. The tunable equalizer includes an amplifier circuit for amplifying input signals and a tunable circuit coupled to the amplifier circuit. The tunable circuit is arranged to provide a zero point in the equalizer frequency response and the zero point is adjusted according to a controllable value. When the controllable value varies according to a uniform offset, the corresponding zero point varies according to a non-uniform offset.

Growing community of inventors

Sanchong, Taiwan

Qui-Ting Chen