block RAM with multiple write modes in fpga

Abstract

The invention belongs to the technical field of electronics, and in particular relates to a sequential control circuit design of write-in operation of IP (Internet protocol) hard core Block RAM (random-access memory) embedded in an FPGA (field programmable gate array). The standard shows sequential control situation requirements under corresponding Write-Modes, and meanwhile, discloses that a delay situation in a current working environment is obtained through a dynamic redundant circuit simulation technique and is fed back to a Write_Mode control module, thereby implementing a configurable circuit design of write operation in different working environments with the different Write-Modes. According to the invention, the required three different Write-Mode configuration conditions in the Block RAM design can be realized, and the high-speed property and reliability of a circuit under various working states are ensured fully.

Description

technical field [0001] The invention belongs to the technical field of electronic design, and in particular relates to the implementation of write operation timing control in FPGA embedded IP hard core BlockRAM (hereinafter referred to as BRAM) and the circuit design taking into account high speed and reliability. Background technique [0002] Early FPGAs consisted of configurable logic blocks (CLBs), input / output blocks (IOBs) and interconnect resources. However, modern digital circuit design has higher and higher requirements for storage resources in FPGA, and using CLB configuration to implement storage functions will consume a large number of configurable resources, and the realized performance will be affected by resource distribution and interconnection length. Therefore, the BRAMIP hard core is introduced into the FPGA to support the realization of storage resources in the FPGA, solve the performance and function limitations of the logic resources, and make the FPGA m...

AI Technical Summary

Problems solved by technology

This requires less logic circuit design, but because the control signal transmission distance is longer, the skew time is longer, and Write_Mode has high requirements on the timing of the signal, so it may cause timing reliability errors

In addition, when the circuit works in different working environments (process angle, temperature, voltage, etc.), the delay of the signal is difficult to simulate with a fixed delay unit, because it is necessary to take the delay to ensure that the data can be written correctly in all cases The maximum value of , making the application of BRAM in the actual chip greatly affects the operating frequency of the chip

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