Logic module with configurable combinational and sequential bloc

Details Logic module with configurable combinational and sequential bloc Logic module with configurable combinational and sequential bloc

1990-05-11

1991-10-08

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307243, H03K 19173

Patent

active

050557181

ABSTRACT:
A logic module includes a first and a second two-input multiplexer each having first and second data inputs. Both the first and second multiplexer include a select input, both of which are connected to the output of a two-input logic gate of a first type having first and second data inputs. The inputs to the first and second two-input multiplexers are sourced with data signals from a first group. One input of each of the logic gates is sourced from a data signal of a second group and the other input of each of the logic gates is sourced from a data signal of a third group. A third two-input multiplexer has its first and second data inputs connected the outputs of the first and second multiplexers, respectively. A select input of the third two-input multiplexer is connected to the output of a two-input logic gate of a second type having first and second data inputs.
The output of the third two-input multiplexer is connected to a first data input of a fourth two-input multiplexer having a HOLD1 input coupled to its select input. Its output is and a CLEAR input are presented to an AND gate whose output is connected to the second data input of the fourth two-input multiplexer and to the first data input of a fifth two-input multiplexer. The select input of the fifth two-input multiplexer is connected to a HOLD2 input. Its output and the CLEAR input are presented to an AND gate whose output is connected to the second data input of the fifth two-input multiplexer and to an output node. The CLEAR, HOLD1 and HOLD2 inputs are defined by combinations of signals from a data signal of a third group which may contain a data siganl of one of the other groups.

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