A converter circuit for performing transfer of control logic signals between a
first device and a second device in connection with an interconnection bus, the
first device operating at the frequency of a first clock signal and the second
device operating at the frequency of a second clock signal. The clock frequencies
may be in a first ratio to one another corresponding to unity, as well as in a
second and a third ratio. The converter circuit includes manipulation circuit elements
which define respective propagation paths through the converter circuit for control
signals. A logic network may assume three states, corresponding, respectively,
to the first, second and third ratios between the frequencies of the clock signals,
selectively interposing the manipulation elements in the propagation paths.