Montage Technology Co., Ltd.

Montage Technology (shanghai) Co., Ltd.

Chonghe Yang

Gang Shan

Xiong Zhang

Gang Shi

Juan Du

Chunlai Sun

An asymmetrical I/O structure is provided. In one embodiment, the asymmetrical I/O structure comprises a first power supply node connected to a first voltage, a second power supply node connected to a second voltage, a pull-up unit and a pull-down unit which are connected between the first power supply node and the second power supply node. The first voltage is higher than the second voltage. A node between the pull-up unit and the pull-down unit is connected to an I/O node. The pull-up unit comprises one or more pull-up transistors, and the pull-down unit comprises one or more pull-down transistors. The number of the pull-up transistors is different from the number of the pull-down transistors.

Asymmetrical I/O structure

The application discloses a buffer device and a method for controlling data access to an internal memory. The buffer device has a central buffer module coupled to a memory interface to receive a command/address signal via a command/address channel. The central buffer module is configured to detect whether a destination address of the received command/address signal is within a predefined address space, and generate a security read/write signal when the command/address signal is within the predefined address space. The buffer device further has a data buffer module coupled between the memory interface and a memory module to buffer data therebetween. The data buffer module is configured to store reference data, compare the buffered data with the reference data in response to the security read/write signal, and determine whether or not to restrict exchange of the buffered data between the memory module and the memory interface.

Buffer device, method and apparatus for controlling access to internal memory

Growing community of inventors

Shanghai, China

Chonghe Yang