| 摘要 |
PURPOSE:To eliminate the need for a number of control signal lines by constructing a shift path with several partial shift pathes and providing a bypass function for the several partial shift pathes. CONSTITUTION:In a logic circuit 1 consisting of a single LSI, all the partial shift pathes composed of first partial shift pathes 10-1 to 10-n with the bypass function and second partial shift pathes 11-1 to 11-n without the bypass function are connected in series to form one shift path. The first partial shift pathes with the bypass function and the second shift pathes without the bypass function can be connected in the arbitrary order and plural number of each of them can be connected consecutively. A shift input signal line 101, a shift output signal line 102 and a shift clock signal line 103 are shared in shift operation. Thus, the number of signal lines required for constructing and controlling the shift path can be reduce. |
