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METHOD FOR OPTIMIZING DATA TRANSFER BETWEEN SYSTEM MEMORY AND PCI MASTER DEVICE AND SYSTEM FOR OPTIMIZING MEMORY ACCESS TIME OF COMPUTER
METHOD FOR OPTIMIZING DATA TRANSFER BETWEEN SYSTEM MEMORY AND PCI MASTER DEVICE AND SYSTEM FOR OPTIMIZING MEMORY ACCESS TIME OF COMPUTER
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机译:优化系统内存与PCI主设备之间的数据传输的方法以及优化计算机内存访问时间的系统
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摘要
PURPOSE: To provide a system for optimizing data transfer time between an external master device and a main memory. ;CONSTITUTION: The system includes an integrated processor provided with a PCT bridge 80 for adjusting data transfer to/from a PCT master 75 and a memory controller 90 for controlling an access to the main memory. When the PCI master 75 can not timely respond, the bridge 80 asserts a MEMWAIT signal to the controller 90 to indicate the necessity of deceleration of data transfer, applies a succeeding memory address to open a proper page in the memory and asserts a suitable row address strobe line to accelerate succeeding data transfer. When the MEMWAIT signal is deasserted, the controller 90 immediately asserts a column address strobe line to drive data. Since the page in the memory is quickly opened, RAS access time and RAS precharging time can be saved.;COPYRIGHT: (C)1997,JPO
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