Repairable finite state machines

Details Repairable finite state machines Repairable finite state machines

2005-05-31

2005-05-31

Tan, Vibol (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Sequential or with flip-flop

C326S016000, C714S727000

Reexamination Certificate

active

06900661

ABSTRACT:
A method and respective hardware logic circuit for implementing partially programmable Finite State Machines in the hardware of digital systems which use finite state machines to implement the control logic of the hardware design. In order to provide a partly reprogrammable Finite State Machine (FSM), which can be reprogrammed in a limited way such that no costly new physical re-build of the chip including said FSM is required, a hardwired FSM includes circuit means that allow that each hardwired product term to be disabled, and further includes means that add programmable product terms which allow adding new behavior to the state machine. Scan-Only SRLs are preferably used to program the required behavior of those programmable product terms.

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