Device, method and system for integrated circuit passive signal distribution
An integrated circuit and signal technology, applied in transmission systems, baseband systems, synchronization devices, etc., can solve the problems of limiting link performance, additional power, signal power reflection, etc.
Inactive Publication Date: 2014-08-20
INTEL CORP
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- Application Information
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Problems solved by technology
[0007] similar figure 1 contact pad 112, the capacitance at contact pad 212 may create a discontinuity at contact pad 212, causing some signal power to reflect back to the external transmission line coupled to contact pad 212
Such reflections create inter-symbol interference (ISI), which may limit link performance and / or require additional power
Method used
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[0029] The following detailed description sets forth embodiments of apparatus, methods, and systems related to integrated circuit passive signal distribution. For convenience, for example, features, such as structure, function, and / or characteristics, are described with reference to one embodiment. The various embodiments may be implemented using any suitable one or more of the described features.
[0030] Passive distribution of externally generated signals
[0031] image 3 A passive signal distribution network 310 is depicted that receives and distributes externally generated signals in integrated circuit 301 in one embodiment. Integrated circuit 301 may be coupled to receive a signal from a signal source 302 . Signal source 302 may include any suitable circuitry that transmits any suitable signal to integrated circuit 301 via external transmission line 305 at any suitable speed. In one embodiment, the signal source 302 can transmit a clock signal to the integrated ci...
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The invention provides a passive signal distribution method for an integrated circuit. In one embodiment, an integrated circuit may include internal transmission lines in one or more layers of the integrated circuit. The internal transmission line may be coupled to receive a signal from the external transmission line at the first end of the internal transmission line without the use of a termination circuit. The internal transmission line can passively transmit the signal to the second end of the internal transmission line. The integrated circuit may include a first circuit having an input coupled to the internal transmission line at a first location to receive the signal; and a second circuit having an input coupled to the internal transmission line at a second location internal transmission line to receive the signal. The second location is different from the first location. In addition, other embodiments are also disclosed.
Description
technical field [0001] The present invention generally relates to integrated circuits. Background technique [0002] figure 1 A clock signal distribution network 110 in a prior art integrated circuit 101 is described. Integrated circuit 101 is coupled to external transmission lines at various pads, such as pad 112, to receive clock and data signals, such as from transmitter 102 in a source synchronous (SS) system. The clock signal is received at the pad 112 and recovered by the buffer 121 of the integrated circuit 101 . Termination resistor 118 is located close to contact pad 112 to suppress signal reflections at or near contact pad 112 when the clock signal is received by integrated circuit 101 . Such signal reflections can compromise signal integrity. [0003] The recovered clock signal is distributed to receivers 131, 132, 133 and 134 via lines, and they are either directly used by receivers 131, 132, 133 and / or 134, or input to receivers 131, 132, 133 and / or 134 A c...
Claims
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IPC IPC(8): H04B1/40H04L7/00
CPCH04L25/0298H04L25/0278H04L25/0292H03K5/15013G06F13/4086G11C7/1048G11C7/1084G11C7/22
Inventor F·奥马霍尼B·卡斯珀J·乔西M·B·海库克J·肯尼迪M·曼苏里S·R·穆尼
Owner INTEL CORP