A Programmable Interconnect Network Based on Programmable Cell Configuration

Abstract

The present invention is suitable for the field of an integrated circuit, and provides a programmable interconnect network configured based on programmable units. The programmable interconnect network comprises the components of: a plurality of kinds of interconnect lines in different types, a switch box, a junction box and a plurality of programmable logic blocks. Signal connection is realized among the programmable logic blocks through the interconnect lines, the switch box and the junction box. The plurality of programmable logic blocks are arranged in different FPGAs. According to the switch box and the junction box, a disposable programmable unit is adopted for storing configuration data of the interconnect network. The programmable interconnect network is realized based on a standard CMOS technique and does not require supporting of a specific process. The programmable interconnect network has high radiation resistance and high interference resistance and prevents soft error and data loss when the programmable interconnect network is interfered by external environment. No DC path exists in a gate oxide breakdown type antifuse unit in the interconnect structure. Small static power consumption and lower work power consumption are realized. After programming, the stored data are fixed to electric potentials of one and zero, and therefore high reliability of the configuration data is realized. The programmed MOS tube is not remarkably different from the un-programmed MOS tube. Easy encryption and high data safety are realized.

Description

technical field [0001] The invention belongs to the field of integrated circuits, in particular to a programmable interconnect network based on programmable unit configuration. Background technique [0002] Field Programmable Gate Array (FPGA, Field Programmable Gate Array) is a digital integrated circuit composed of configurable logic blocks. The configurable logic blocks and interconnection resources are configured through different configuration data to realize specific logic functions. Three basic components constitute: Programmable Logic Block (CLB), Input-Output Unit (IOB) and Programmable Interconnect Network (PI). [0003] The programmable interconnect network (PI) in FPGA is used to realize the connection between programmable logic function blocks, and is an important part of the whole FPGA chip. At present, the programmable interconnection network in FPGA is generally divided into three types according to the configuration technology: the programmable interconnect...

AI Technical Summary

Problems solved by technology

[0011] The present invention provides a programmable interconnect network based on programmable unit configuration, aiming to solve the problem that under the standard CMOS process, the configuration data of the programmable interconnect network inside the FPGA chip is easily lost when the configuration data is disturbed by the irradiation environment Or serial modification, prone to soft errors, low data security and reliability, and short data retention time

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