Arrangement of integrated circuits in a memory module
First Claim
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1. A memory module comprising:
- a printed circuit board having a first lateral portion and a second lateral portion;
a plurality of identical integrated circuits mounted in a first row and a second row onto at least one surface of the printed circuit board;
a control logic bus connected to the plurality of identical integrated circuits, the control logic bus comprising a first set of address signal paths and a second set of address signal paths; and
a first register and a second register connected to the control logic bus, the first register accessing a first range and a second range of data bits, the second register accessing a third range and a fourth range of data bits, the first range and the second range of data bits being first and second non-contiguous subsets of a data word, and the third range and the fourth range of data bits being third and fourth non-contiguous subsets of the data word, wherein the first set of address signal paths connect the first register to the integrated circuits of the first row and the second row on the first lateral portion and the second set of address signal paths connect the second register to the integrated circuits of the first row and the second row on the second lateral portion.
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Abstract
Integrated circuits utilizing standard commercial packaging are arranged on a printed circuit board to allow the production of 1-Gigabyte and 2-Gigabyte capacity memory modules. A first row of integrated circuits is oriented in an opposite orientation to a second row of integrated circuits. The integrated circuits in a first half of the first row and in the corresponding half of the second row are connected via a signal trace to a first register. The integrated circuits in a second half of the first row and in the corresponding half of the second row are connected to a second register. Each register processes a non-contiguous subset of the bits in each data word.
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Citations
20 Claims
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1. A memory module comprising:
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a printed circuit board having a first lateral portion and a second lateral portion;
a plurality of identical integrated circuits mounted in a first row and a second row onto at least one surface of the printed circuit board;
a control logic bus connected to the plurality of identical integrated circuits, the control logic bus comprising a first set of address signal paths and a second set of address signal paths; and
a first register and a second register connected to the control logic bus, the first register accessing a first range and a second range of data bits, the second register accessing a third range and a fourth range of data bits, the first range and the second range of data bits being first and second non-contiguous subsets of a data word, and the third range and the fourth range of data bits being third and fourth non-contiguous subsets of the data word, wherein the first set of address signal paths connect the first register to the integrated circuits of the first row and the second row on the first lateral portion and the second set of address signal paths connect the second register to the integrated circuits of the first row and the second row on the second lateral portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of accessing data bits of a data word, the method comprising:
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providing a memory module comprising;
a printed circuit board having a first lateral portion and a second lateral portion;
a plurality of identical integrated circuits mounted in a first row and a second row onto at least one surface of the printed circuit board;
a control logic bus connected to the plurality of identical integrated circuits, the control logic bus comprising a first set of address signal paths connected to the integrated circuits of the first row and the second row on the first lateral portion and a second set of address signal paths connected to the integrated circuits of the first row and the second row on the second lateral portion; and
a first register and a second register connected to the control logic bus, wherein the first register is connected to the integrated circuits of the first row and the second row on the first lateral portion by the first set of address signal paths and the second register is connected to the integrated circuits of the first row and the second row on the second lateral portion by the second set of address signal paths;
accessing a first range of data bits and a second range of data bits using the first register, the first range and the second range of data bits being first and second non-contiguous subsets of the data word; and
accessing a third range of data bits and a fourth range of data bits using the second register, the third range and the fourth range of data bits being third and fourth non-contiguous subsets of the data word. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification