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Clock-domain-crossing clock tree building method, clock-domain-crossing clock tree building system, integrated circuit and manufacturing method

An integrated circuit, cross-clock domain technology, applied in the field of clock tree construction, to achieve the effect of improving performance and optimizing clock tree

Inactive Publication Date: 2014-10-01
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of maximizing the common path of the same clock domain does not consider this situation, and cannot solve the problem of clock tree performance optimization across clock domains

Method used

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  • Clock-domain-crossing clock tree building method, clock-domain-crossing clock tree building system, integrated circuit and manufacturing method
  • Clock-domain-crossing clock tree building method, clock-domain-crossing clock tree building system, integrated circuit and manufacturing method
  • Clock-domain-crossing clock tree building method, clock-domain-crossing clock tree building system, integrated circuit and manufacturing method

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Embodiment Construction

[0022] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0023] Those skilled in the art know that the present invention can be implemented as a system, method or computer program product. Therefore, the present disclosure can be specifically implemented in the following forms, namely: it can be complete hardware, it can also be complete software (including firmware, resident software, microcode, etc.), and it can also be a combination of hardware and software. Called a "circuit", "module" or "sy...

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Abstract

Disclosed is a method and system for clock tree construction across clock domains, an integrated circuit and fabrication method thereof. A method for clock tree construction includes acquiring a netlist describing an integrated circuit (IC), comprising data for describing physical locations and logic connections of clock sinks belonging to multiple clock domains on the pattern of the IC, and constructing the clock tree across clock domains based on the netlist, such that clock cells belonging to different clock domains can share more physical locations. Accordingly, clock trees can be constructed across clock domains to improve IC performance.

Description

technical field [0001] The present invention relates to integrated circuit (IC) design, and more particularly, to a method and system for constructing a clock tree, an integrated circuit and a manufacturing method thereof. Background technique [0002] A typical digital IC can contain a large number of logic elements and other circuits to implement its logic functions. Additionally, the IC chip may contain a clock tree (ie, a clock signal distribution network) for distributing a clock signal received at its input to all clock sinks that are clocked by that clock signal. A clock tree may include wires, buffers, etc. to distribute clock signals that control the timing and operation of the IC's logic elements and other circuits. The clock receiver (or receiver) refers to the logic elements and other circuits contained in the IC that are controlled by the clock signal to increase the capacity of the clock tree, such as registers (flip-flops), RAM, latches, etc. The receivers c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F17/5068G06F30/396G06F30/39
Inventor 吴列治徐越刘洋陈孙阳
Owner IBM CORP
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