The Effects of Interconnections on High-Speed Logic Circuits
TL;DR: It is shown that high-speed circuitry must be miniaturized and the implications are discussed.
Abstract: By way of worked examples in typical but somewhat idealized cases the effect on circuit speed of circuit interconnections is studied. The source, calculation and minimization of interconnection crosstalk is also discussed. It is shown that high-speed circuitry must be miniaturized and the implications are discussed.
Citations
More filters
TL;DR: It is shown that the minimum number N(n, q) of switches required equals ½(q+1)(2n-q+2) for the case when added internal circuit nodes are disallowed, or when q=1, and equals 3n otherwise.
Abstract: Faults can be circumvented in one-dimensional cellular arrays simply by switching out (bypassing) the defective cells in the cascade. In this note, the problem is solved of finding the minimal network of switches capable of bypassing up to q possibly defective cells from an n-celled array. The cells may be combinational or sequential, unilateral or bilateral, and may employ digital or continuous signals. It is shown that the minimum number N(n, q) of switches required equals ½(q+1)(2n-q+2) for the case when added internal circuit nodes are disallowed, or when q=1, and equals 3n otherwise.
TL;DR: A comparison of pulse rise time versus pulse propagation time in a modern digital computer suggests, that the circuit interconnections be considered as electrically long transmission lines.
Abstract: A comparison of pulse rise time versus pulse propagation time in a modern digital computer suggests, that the circuit interconnections be considered as electrically long transmission lines. Common interconnection media offer three major line types designated as the shielded, the semishielded, and the unshielded transmission line. Signal propagation on these lines is investigated, leading to an assessment of cross-talk and signal deterioration. The effects of line loading and line discontinuities are briefly reviewed.
Cites background from "The Effects of Interconnections on ..."
...in [1] und [4]), die einen jeweils verschiedenen Satz von Voraussetzungen, welche der jeweils beabsichtigenden Anwendung angemessen sind, annehmen, um so zu einer übersichtlichen und anschaulichen Beschreibung zu gelangen....
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...in [1]) AbVerwendet man Schaltkreise mit typischen Anstiegszeiten um 10 ns (handelsübliche Systeme wie z....
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01 Oct 1989
TL;DR: In this paper, discontinuities effects due to passive components (interconnecting lines) in modern packages are analyzed and theoretical predictions based on proposed analysis are compared with the experimental results obtained on specific test vehicles.
Abstract: Analysis of discontinuities effects due to passive components (interconnecting lines) in modern packages is given. Interconnections used are multilevel designed and burried in multilayered dielectric substrate. Theoretical predictions based on proposed analysis are compared with the experimental results obtained on specific test vehicles.
01 Aug 2016
TL;DR: The exponential transmission matrix of nonuniform transmission line's equation is transformed into a general algebraic equation, which greatly simplifies the analysis on transient response for nonun uniform transmission line.
Abstract: The vast majority of nonuniform transmission lines are no analytical solution except for a few special forms of transmission line. Dividing nonuniform transmission line into several equal parts, then each part can be regarded as uniform transmission line approximately. Using the theory of uniform transmission line to analyze nonuniform transmission line's transient response is the commonly used method. Composite Simpson's rule for transient analysis of nonuniform transmission lines is proposed in this paper. The exponential transmission matrix of nonuniform transmission line's equation is transformed into a general algebraic equation, which greatly simplifies the analysis on transient response for nonuniform transmission line. The simulation results illustrate the accuracy of the presented approach with examples.
Additional excerpts
...0 0 ) exp( ) exp( ) ( ) ( I U I U D I D U P P H (6)...
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References
More filters
01 Nov 1954
TL;DR: In this article, a simple configuration of four wires (or two wires and ground) can serve simultaneously as a directional coupler, filter, and transformer, and the coupled lines may be of equal or different impedance.
Abstract: The natural coupling between parallel transmission lines is inherently directional. Very simple and cheap directional couplers can be made which utilize this effect. By introducing appropriate variation of coupling with distance a wide variety of transmission characteristics may be realized, including high-pass (ideally, infinite bandwidth) characteristics. The coupled lines may be of equal or different impedance. Thus, a simple configuration of four wires (or two wires and ground) can serve simultaneously as a directional coupler, filter, and transformer.
215 citations
IBM1
TL;DR: This computer, like the 704, is aimed at scientific problems such as reactor design, hydrodynamics problems, partial differential equations etc., its instruction set and organization are such that it can handle with ease data-processing problems normally associated with commercial applications, such as processing of alphanumeric fields, sorting, and decimal arithmetic.
Abstract: The Stretch Computer project was started in order to achieve two orders of magnitude of improvement in performance over the then existing 704. Although this computer, like the 704, is aimed at scientific problems such as reactor design, hydrodynamics problems, partial differential equations etc., its instruction set and organization are such that it can handle with ease data-processing problems normally associated with commercial applications, such as processing of alphanumeric fields, sorting, and decimal arithmetic.
76 citations
[...]
TL;DR: This paper gives a brief description of work originating in the Computer Group at Manchester University, the name given to a large computing system which can include a variety of peripheral equipments, and an extensive store.
Abstract: This paper gives a brief description of work originating in the Computer Group at Manchester University. Atlas is the name given to a large computing system which can include a variety of peripheral equipments, and an extensive store. All the activities of the system are controlled by a program called the supervisor. Several types of store are used, and the addressing system enables a virtually unlimited amount of each to be included. The primary store consists of magnetic cores with a cycle time of under two microseconds, which is effectively reduced by multiple selection mechanisms. The core store is divided into 512 word "pages"; this is also the size of the fixed blocks on drums and magnetic tapes. The core store and drum store are addressed identically, and drum transfers are performed automatically as described in Section 3. There is a fixed store which consists of a wire mesh into which ferrite slugs are inserted; it has a fast read-out time, and is used to hold common routines including routines of the supervisor. A subsidiary core store is used as working space for the supervisor. The V-store is a collective name given to various flip-flops throughout the computer, which can be read, set, and re-set by reading from or writing to particular store addresses.
28 citations
Book•
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01 Nov 2001
TL;DR: In this article, a brief description of work originating in the Computer Group at Manchester University is given, where the core store is divided into 512 word "pages"; this is also the size of the fixed blocks on drums and magnetic tapes.
Abstract: This paper gives a brief description of work originating in the Computer Group at Manchester University. Atlas is the name given to a large computing system which can include a variety of peripheral equipments, and an extensive store. All the activities of the system are controlled by a program called the supervisor. Several types of store are used, and the addressing system enables a virtually unlimited amount of each to be included. The primary store consists of magnetic cores with a cycle time of under two microseconds, which is effectively reduced by multiple selection mechanisms. The core store is divided into 512 word "pages"; this is also the size of the fixed blocks on drums and magnetic tapes. The core store and drum store are addressed identically, and drum transfers are performed automatically as described in Section 3. There is a fixed store which consists of a wire mesh into which ferrite slugs are inserted; it has a fast read-out time, and is used to hold common routines including routines of the supervisor. A subsidiary core store is used as working space for the supervisor. The V-store is a collective name given to various flip-flops throughout the computer, which can be read, set, and re-set by reading from or writing to particular store addresses.
27 citations
01 Jan 1960
18 citations