VLSI performance compensation for off-chip drivers and clock gen

Details VLSI performance compensation for off-chip drivers and clock gen VLSI performance compensation for off-chip drivers and clock gen

1988-09-02

1990-07-03

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307452, 307481, 307269, 307594, 371 151, 371 28, 377 34, H03K 19017, H03K 19096

Patent

active

049393898

ABSTRACT:
A performance-sensing element (PSE) circuit detects the actual speed of other circuits on the same chip 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.

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King et al, "Delay and Power Tolerance Regulator for FET Logic", IBM TDB, vol. 23, No. 4, 9-1980, pp. 1305-1306.
Kilmer, "Process-Independent Delay Driver", IBM T.D.B., vol. 23, No. 9, 2-1981, pp. 4187-4188.

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