EFFICIENT PERFORMANCE MODELLING AND IMPLEMENTING LPDIR AND DIR SADC MEMORY CONTROLLER USING VERILOG.

Abstract

The design would provide a better and novel operating schemes to improvise precise control and data capabilities for DIR (Double knowledge Rate) SADC Controller. The Synchronous Dynamic RAM with doubling the data at higher clock rate is to associate and improve capabilities for standard SD-RAM clock-rate and data bus speed-over 60MHz. The SADC with doubling data technique scheme for the information to measure the memory by transferring data and its parameters inclusive of double per cycle, providing each set of posedge and negedge of gated clock signal. The designed Controller with doubling the data factor which supports knowledge breadth of sixty four bits, Burst Length of four, and CAS (Column ADIRess Strobe) latency of two. DIR (Double Information Rate) Controller provides asynchronous command interface to the DIR (Double Information Rate) RAM with synchronously adapting dynamic changes on memory at the side of many management signals. DIR (Double Information Rate) SADC-RAM  with data accessing transmitting with doubling or multiple has established and improvised to foremost authorities to initiate multiple categories of memory modelled in computers because of its high-speed, fast-burst access, and instruction-pipeline feature. For high-speed applications like data-image/ data-video processing, signal-process, neural networking, etc. DIR-SADC RAM is wide used. The essential operations of DIR-SADC RAM controller like that of SIR SADC; but, there's a distinction within the circuit design; DIR use subtle circuit techniques to attain high speed. To emphasize a multiple operations per unit-clock cycle for DIR-SADC RAM which uses double rate design. DIR-SADC RAM (also referred to as DIR) transfers knowledge on each the rising and falling fringe of the clock. The DIR controller is meant with objective of correct commands for SADC RAM format for opcode generations, data-read/ data-write accesses in controller and external, regular frequency based refresh operation on each cycle of implementation, correct active-states and states for pre-charge command, etc. DIR-SADC RAM controller is enforced to provide best solution on Verilog design model and its simulation and synthesis is completed by exploitation Model-sim and Xilinx ISE consequently.