摘要:
A gated binary signal transmission circuit in a field effect semiconductor chip comprises a single signal-pass transistor (20A, B) connected between a bit signal input (28A, B) to one of its electrodes (24A, B) and a bit signal output (12A, B) from another of its electrodes (26A, B). Its control electrode (22A, B) is connected for temporary energisations by switching circuitry (32,34) operative only at prescribed intervals, the single signal-pass transistor (20A, B) being operative to pass signals between such energisations of its control electrode (22A, B). Conduction of the single signal-pass transistor between energisations will persist, though with some decay, due to inherent capacitance and the control electrode being left "floating" between energisations.
摘要:
A configurable semi-conductor integrated circuit comprising an area thereof formed with a plurality of logic circuits at discrete sites or cells (cc) respectively defining a matrix array of cells. The matrix array of cells is subdivided at least into zones (each comprising a matrix array of cells) and further comprising a porting arrangement for each zone and a hierarchical routing resource structure comprising:-
(i) global connection parts (G, X) having selectable connections with the porting arrangement of each zone, (ii) medium connection parts (M) extending from the porting arrangement and selectably connectable with at least some of the cells in a zone, and (iii) local direct connection paths comprising a restricted signal translation system.
The application also describes a configurable semi-conductor integrated circuit comprising a matrix array of core cells (cc), each of the cells having a first simple function in common and at least one subsidiary function, there being at least two different subsidiary functions, the core cells being grouped in tiles comprising a matrix array of the core cells smaller than the whole array and wherein each tile has at least one of each different subsidiary functions and wherein the tiles of core cells are arranged so as to uniformly cover the array. Preferably there are fours cells to a tile and the preferred subsidiary function are:- wired-OR, XOR, D-type flip flop and latch function. The above features are preferably combined to produce a particularly advantageous construction of configurable semi-conductor integrated circuit.
摘要:
A configurable semi-conductor integrated circuit comprising an area thereof formed with a plurality of logic circuits at discrete sites or cells (cc) respectively defining a matrix array of cells. The matrix array of cells is subdivided at least into zones comprising a porting arrangement for each zone and a hierarchical routing resource structure comprising:-
(i) global connection parts (G,X) having selectable connections with the porting arrangement of each zone, (ii) medium connection parts (M) extending from the porting arrangement and selectably connectable with at least some of the cells in a zone, and (iii) local direct connection paths comprising a restricted signal translation system.
The application also describes a configurable semi-conductor integrated circuit comprising a matrix array of core cells (cc), each of the cells having a first simple function in common and at least one subsidiary function, there being at least two different subsidiary functions, the core cells being grouped in tiles comprising a matrix array of the core cells smaller than the whole array and wherein each tile has at least one of each different subsidiary functions and wherein the tiles of core cells are arranged so as to uniformly cover the array. Preferably there are fours cells to a tile and the preferred subsidiary function are:- wired-OR, XOR, D-type flip flop and latch function.
摘要:
A switched capacitor circuit is described which is programmable so that its function can be set by a user. Thus, control circuitry and selection circuitry are provided to enable one of a plurality of alternative control signals to be provided to switch circuits of the switched capacitor circuit. In this way, the function of the switched capacitor circuits can be altered. Where there are a plurality of switched capacitor circuits connected in an array, the topology of the array can be altered by suitably routing particular input signals to particular outputs by selecting the control signals to control the switched circuits. A field programmable array of this type is also described.
摘要:
An electronic identity device is proposed for securing to equipment, especially a vehicle, and has anti-tampering protection. The device is intended to prevent the identity of a vehicle being changed unknowingly. The device comprises at least a control processor (10) having a memory containing accessible data unique to the equipment (for example a vehicle chassis number and/or engine number), and preferably a slave processor (20). The device also comprises means (1, 7, 8) generating a security signal and means for detecting any lack of integrity of the security signal to generate a tamper warning signal. The security signal is generated repeatedly irrespective of whether the vehicle is in operation. More particularly, the security signal is transmitted over a communication link (18) in the form of fibre optic cabling which is adhered to the equipment. Any attempt to remove the electronic device or tamper with the cabling will corrupt the security signal and therefore generate a tamper warning signal.
摘要:
This invention relates to semiconductor integrated circuits which find utility in analogue systems. An integrated circuit of the invention comprises an array (A) of configurable analogue cells (CL) each of which is capable of interconnection with other cells in the array by means of an interconnection network (HB, VB). Each of the cells can be selectively and individually selected by means of select signals (SS) and (DD) emanating from shift registers (DSRH, PSRV). When selected the cell (CL) may be configured with configuration data (DD, AD) which both sets the cell to take up a particular electrical configuration by means of digital data (DD) and sets various programmable resistors and capacitors (P/res, P/cap) in the cells to particular values by means of analogue signals (AD). The configuration data is held in a random access memory RAM. Some of this data is converted to analogue form (AD) by means of a ditigal-to-analogue converter (DAC). The circuit is controlled by a central control (CC) and is capable of being configured to implement particular analogue functional applications from a plurality of possible analogue functional applications. Provision in the circuitry is made to automatically compensate for manufacturing component tolerances.
摘要:
Selectable signal connection provisions (30 or 50) are made for passing signals relative to logic circuitry of digital bipolar semiconductor integrated circuits. Each such provision (30 or 50) has formed on the chip for each selectable signal connection, an active circuit element (22 or 42) whose conduction state relative to signals concerned is controlled by applied circuit conditions. The conditions are selected by operative control circuitry (32 or 52) responsive to a configuring or selection signal (at 34 or 54) applied temporarily thereto for switching between stable states and thus determining the conduction state of the active circuit element (22 or 42)
摘要:
This invention is concerned with semiconductor integrated circuits of the type comprising configurable logic circuit arrays of the type disclosed in specification No. GB B-2180382. Such an array may be programmed to configure a plurality of NAND-gates (G1) in the array to perform various and different logic functions. This invention is particularly concerned with the provision of an additional logic circuit (c) at each discrete site or cell which additional logic circuit (c) is controllable by a control means (GCS) to cause the additional logic circuit (c) and the logic circuit to operate as either a simple NAND logic function or a simple LATCH logic function.
摘要:
Configurable semiconductor integrated circuits as-made each have a plurality of logic circuits formed at discrete sites (10S). For each logic circuit, direct selectably conducting/non- conducting connection paths (14A,B,C,F) extend from its output to input of a first set of other logic circuits and to its inputs from outputs of a second set of other logic circuits. All of the sets for all of the logic circuits are each different. Other direct connection paths (50R,50C) are selectably connectable to inputs (14D,E) and outputs (52G,H) of the logic circuits. Selection can be irreversible (Figure 8) or reversible (Figures 9, 10, 11, 18) and involves coincident signal addressing (22R,C) of the sites (105) and coded configuring ofthe paths at that site. Reversible selection can beviafield effect transistors or bipolar transistors and can be at or near normal logic signal levels and speeds (Figures 11 and 18). Versatile configurable input/output arrangements are described (Figures 13-16), also reconfigurable data processing systems using the reversible transistor provisions (Figures 20-23).