Memory device with a central control bus and a control access re

Details Memory device with a central control bus and a control access re Memory device with a central control bus and a control access re

1996-02-14

1998-05-05

Swann, Tod R.

Static information storage and retrieval

Magnetic bubbles

Guide structure

395431, 395481, 39518303, 36518533, 365193, 36518905, 365201, G06F 1316, G06F 1200

Patent

active

057489394

ABSTRACT:
A memory device includes a cell array having a plurality of memory cells and a read/write circuit having circuitry for selecting, writing, and reading the memory cells according to a plurality of control signals. A control register circuit is provided that has at least one control register coupled to communicate over a central control bus. A control access circuit is provided that receives an access request targeted for the control register, and translates the access request into an access cycle on the central control bus. The access cycle loads the control register and causes the control register circuit to generate the control signals. The control access circuit receives the access request targeted for the control register from an array controller circuit that generates the access request to load the control register and generate the control signals according to a user command received over a host bus. The control register includes an address decode circuit, a function decode circuit, a master data latch, a slave data latch, and a read control circuit.

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