SYSTEM AND METHOD FOR OPTIMIZING INTERCONNECTIONS OF COMPONENTS IN A MULTICHIP MEMORY MODULE
First Claim
1. A memory module comprising;
- a circuit board;
a memory hub positioned in approximately a center of the circuit board;
a plurality of memory devices positioned around the memory hub and arranged in pairs, each memory device including pins associated with a first functional group of signals adjacent a first end of the device and pins associated with a second functional group of signals adjacent a second end of the device, and the first ends of the devices in each pair being positioned adjacent one another on the circuit board and the second end of each device in a pair being positioned adjacent a second end of a device in one of the other pairs; and
an edge connector positioned along an edge of the circuit board and coupled to the memory hub.
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Accused Products
Abstract
An apparatus and method couples memory devices in a memory module to a memory hub on the module such that signals traveling from the hub to the devices have approximately the same propagation time regardless of which device is involved. Specifically, the devices are arranged around the hub in pairs, with each pair of devices being oriented such that a functional group of signals for each device in the pair, such as the data bus signals, are positioned adjacent each other on a circuit board of the module. This allows for a data and control-address busses having approximately the same electrical characteristics to be routed between the hub and each of the devices. This physical arrangement of devices allows high speed operation of the module. In one example, the hub is located in the center of the module and eight devices, four pairs, are positioned around the hub.
102 Citations
21 Claims
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1. A memory module comprising;
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a circuit board; a memory hub positioned in approximately a center of the circuit board; a plurality of memory devices positioned around the memory hub and arranged in pairs, each memory device including pins associated with a first functional group of signals adjacent a first end of the device and pins associated with a second functional group of signals adjacent a second end of the device, and the first ends of the devices in each pair being positioned adjacent one another on the circuit board and the second end of each device in a pair being positioned adjacent a second end of a device in one of the other pairs; and an edge connector positioned along an edge of the circuit board and coupled to the memory hub. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A multi-chip memory module comprising:
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a memory hub; a plurality of memory devices positioned around the memory hub, arranged in pairs, and coupled to the memory hub, each respective one of the memory devices including electrical contacts associated with a first functional group of signals adjacent a first end of the respective memory device and electrical contacts associated with a second functional group of signals adjacent a second end of the respective memory device, and the first end of each memory device in each pair being positioned adjacent one another and the second end of each device in a pair being positioned adjacent a second end of a device in one of the other pairs. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A multi-chip memory module comprising:
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a circuit board; a memory hub on the circuit board; and a plurality of memory devices coupled to the memory hub, wherein pairs of the memory devices are positioned around the memory hub, each respective one of the memory devices in a respective pair being physically rotated 180 degrees in a plane of the circuit board relative to the other device in the pair. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification