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Browse Prior Art Database

Placement of a Random Logic Macro in a CMPHILO BIT STACK

IP.com Disclosure Number: IPCOM000102724D
Original Publication Date: 1990-Jan-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 28K

Publishing Venue

IBM

Related People

Genz, R: AUTHOR

Abstract

Disclosed is a technique for putting maximum functions on a microchip which uses CMPHILO BIT STACK macros and random logic.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Placement of a Random Logic Macro in a CMPHILO BIT STACK

      Disclosed is a technique for putting maximum functions on a
microchip which uses CMPHILO BIT STACK macros and random logic.

      CMPHILO BIT STACK macros are very efficient for putting maximum
functions on a chip using CMPHILO technology.  This efficiency is
enhanced when signals to the macros are vertically contained in the
stack.  In some applications a large number of signal outputs from
the macros go to random logic.  The same enhancement of running
signals vertically in the stack can be maintained by putting the
random logic which uses the signals from the macros internal to the
bit stack in a random logic macro.

      The placement of random logic macro internal to a bit stack
will save a significant amount of chip area because the bit stack
macros can be placed close together.  For signals that go
horizontally out of a bit stack the bit stack macros must be
separated to allow area for the signal paths.

      Disclosed anonymously.