Patent ID: 7230988

Claim:
An apparatus to communicate numeric data between first and second circuits, comprising: a controller communicatively coupled to the first circuit to receive the numeric data; an accumulator communicatively coupled to the second circuit and said controller, the accumulator comprising accumulator logic managing reference data, the controller being responsive to the numeric data to selectively cause said accumulator logic to perform at least one of an increment function and a decrement function to update the reference data to match the numeric data, the accumulator to notify the second circuit of the updated reference data; a first signal line interposing said accumulator and said controller, said first signal line capable of bearing a first signal issued by said controller, said accumulator logic to increment the reference data responsive to the first signal; and a second signal line interposing said accumulator and said controller, said second signal line capable of bearing a second signal issued by said controller, said accumulator logic to decrement the reference data responsive to the second signal.