Cypress Semiconductor Corporation

Rakesh Mehrotra

Pidugu L Narayana

Nagendra Srinivas Cherukupalli

Somnath Paul

Shiva P Gowni

Purushothaman Ramakrishnan

Chirakkal Varriam Unnikrishnan

Pattikad Narayanan Ravindran

A method of full semiconductor chip timing closure includes the steps of determining a system level place and route. Next, a static timing analysis for each of a number of subsystems is performed. Finally, a full chip static timing analysis is performed.

Method of full semiconductor chip timing closure

A method and system for providing hybrid clock distribution is disclosed. The distribution architecture uses a grid distribution at the top level and a balanced buffer tree distribution at the block level. The method includes determining the block layout of an integrated circuit which employs a clock distribution network for distributing clock signals. In addition the method includes providing a mesh distribution network for delivering clock signals to integrated circuit blocks of the integrated circuit. Thereafter, a balanced tree distribution network for delivering clock signals to the components of each block of the integrated circuit is provided. The top level grid provides predictable min/max skew at the top level and the remainder skew budget can be applied to the blocks.

Method and system for providing hybrid clock distribution

A method for multi-bit de-skewing of parallel bus signals is disclosed. The method includes receiving data comprising a multi-bit word and a training pattern. After a first control word of the training pattern is detected, the number of bits needed to de-skew each data bit of a multi-bit data word in each bit-line of a parallel bus is calculated. The number of bits needed to de-skew each data bit of a multi-bit data word in each bit-line of the parallel bus is transmitted to a bit delay line. The system then outputs a de-skewed data word.

Multi-bit deskewing of bus signals using a training pattern

A circuit comprising a plurality of gates and a plurality of control circuits. The plurality of gates may each have an output connected to an input of a next gate of the plurality of gates. The plurality of control circuits may be connected to a second input of one or more gates of the plurality of gates. The plurality of control circuits may simulate switching.

Static timing analysis with simulations on critical path netlists generated by static timing analysis tools

An apparatus comprising a first memory, a second memory, a control circuit and a flag circuit. The first and second memories may each be configured to store data received from a first data input and present data to a first data output. The control circuit may be configured to control data stored in response to a write clock and control data presented in response to a read clock. The flag circuit may be configured to generate one or more composite flags in response to the first memory and the second memory.

Memory architecture

An apparatus comprising a first memory and a second memory. The first memory may be configured read and write words from a data stream comprising a plurality of words in response to (i) a first read enable signal and (ii) a first write enable signal. The second memory may be configured to read and write words from the data stream in response to (i) a second read enable signal and (ii) a second write enable signal. The first and second memories may be configured to read and write alternate words of the data stream.

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San Jose, CA, United States of America

Rakesh Mehrotra