Information processing apparatus

Details Information processing apparatus Information processing apparatus

1998-05-26

2000-08-01

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Storage accessing and control

Access timing

711154, 713600, G06F 1314

Patent

active

060981598

ABSTRACT:
An information processing apparatus is provided which is capable of carrying out the higher memory access. The information processing apparatus includes a memory unit of a synchronous DRAM device which serves to output data synchronously with the supplied clock signal, and a control unit for controlling the access to the memory unit in accordance with an instruction issued from a CPU. The clock signal which is to be supplied to the memory unit is outputted from the control unit. The clock signal which has been outputted from the control unit is supplied to the memory unit and also is pulled back to the control unit. The control unit fetches therein the data, which has been outputted from the storage unit, at the timing which is determined on the basis of the pulled back clock signal. As a result, the control unit reduces the difference between a delay of the data which is outputted from the control unit and a delay of the clock signal which is used to determine the timing at which the data is fetched therein.

REFERENCES:
patent: 5463756 (1995-10-01), Saito et al.
patent: 5479647 (1995-12-01), Harness et al.
patent: 5577236 (1996-11-01), Johnson et al.
patent: 5623638 (1997-04-01), Andrade

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