Abstract:
In brief, methods and apparatus are provided for bipolar elimination in silicon-on-insulator (SOI) domino circuits. The apparatus for bipolar elimination in silicon-on-insulator (SOI) domino circuit includes a domino silicon-on-insulator (SOI) field effect transistor (402). An input is coupled to the domino silicon-on-insulator (SOI) field effect transistor (402). A predischarging device is coupled to said domino silicon-on-insulator (SOI) field effect transistor (402). The predischarging device is activated during a precharge mode of the domino circuit, so that the SOI parasitic bipolar transistor is not activated. A dynamic input circuit (300) couples the input to the domino silicon-on-insulator (SOI) field effect transistor (402). The output of the dynamic input circuit (300) is low during the precharge mode. The output of the dynamic input circuit (300) corresponds to the input during the evaluate mode. The output of the dynamic input circuit (300) is used to gate the predischarging device.
Abstract:
A VLSI chip (100) has multiple annular rings (122) of circuit cells, interspersed with annular wiring channels (123) for interconnecting the cells. Another wiring layer runs perpendicular to the rings. A central chip area (110) contains all the I/O connections (113) for the chip.
Abstract:
1516817 Logic INTERNATIONAL BUSINESS MACHINES CORP 25 April 1977 [1 June 1976] 17187/77 Heading G4H In a logic network, signals are passed from an AND array to the OR array variously through or past inverters.
Abstract:
A performance-sensing element (PSE) circuit (300) detects the actual speed of other circuits on the same chip (200) by launching a pulse into a tapped cascade of circuits on the chip, then detecting how far the pulse has progressed after a known interval. Control signals indicating circuit speed can stabilize parameters of the other circuits, such as rate of change of current (di/dt) in driver circuits, absolute delay of clock signals from one chip to another, and relative delay of multiple clock signals within the chip.
Abstract:
In an integrated circuit chip (10) utilizing CMOS technology, an embedded data bus (11) is driven by embedded three state drivers (12-15), and the bus is in turn connected to provide a drive signal to embedded receivers and similar logic devices. An embedded threshold detector (19) is provided to detect the occurrence of any invalid data signal (i.e. a non-"0" or a non-"1" signal level) on the data bus. The threshold detector's output signal is connected to off chip terminal means, to thereby enable off chip monitoring of the bus signal. The threshold detector's output signal is also ANDed with the bus signal, to thereby prevent the application of a potentially destructive invalid bus signal to the receivers and the like. Terminator circuit means provides a known invalid signal state on the bus when the bus is in its high impedance state due to all of the three state drivers being disabled.
Abstract:
@ A method of optimizing signal timing delays and power consumption through multi-path LSI circuits constructed from a plurality of circuit blocks, each circuit block having associated therewith a plurality of power levels which are selectable to control the timing delays through the circuit block, wherein the method steps include the formation of a power- performance derivative for each circuit block, identifying therefrom the relative contribution to signal delay of the circuit block in the entire multi-path configuration, and selecting the optimum power level for an overall multi-path minimum signal delay condition, through a process of iterative calculation of timing delays through individual circuit blocks and multi-path timing analysis.
Abstract:
A VLSI chip (100) has multiple annular rings (122) of circuit cells, interspersed with annular wiring channels (123) for interconnecting the cells. Another wiring layer runs perpendicular to the rings. A central chip area (110) contains all the I/O connections (113) for the chip.
Abstract:
@ A method of optimizing signal timing delays and power consumption through multi-path LSI circuits constructed from a plurality of circuit blocks, each circuit block having associated therewith a plurality of power levels which are selectable to control the timing delays through the circuit block, wherein the method steps include the formation of a power- performance derivative for each circuit block, identifying therefrom the relative contribution to signal delay of the circuit block in the entire multi-path configuration, and selecting the optimum power level for an overall multi-path minimum signal delay condition, through a process of iterative calculation of timing delays through individual circuit blocks and multi-path timing analysis.
Abstract:
In an integrated circuit chip (10) utilizing CMOS technology, an embedded data bus (11) is driven by embedded three state drivers (12-15), and the bus is in turn connected to provide a drive signal to embedded receivers and similar logic devices. An embedded threshold detector (19) is provided to detect the occurrence of any invalid data signal (i.e. a non-"0" or a non-"1" signal level) on the data bus. The threshold detector's output signal is connected to off chip terminal means, to thereby enable off chip monitoring of the bus signal. The threshold detector's output signal is also ANDed with the bus signal, to thereby prevent the application of a potentially destructive invalid bus signal to the receivers and the like. Terminator circuit means provides a known invalid signal state on the bus when the bus is in its high impedance state due to all of the three state drivers being disabled.
Abstract:
A performance-sensing element (PSE) circuit (300) detects the actual speed of other circuits on the same chip (200) by launching a pulse into a tapped cascade of circuits on the chip, then detecting how far the pulse has progressed after a known interval. Control signals indicating circuit speed can stabilize parameters of the other circuits, such as rate of change of current (di/dt) in driver circuits, absolute delay of clock signals from one chip to another, and relative delay of multiple clock signals within the chip.