| 摘要 |
PURPOSE:To prevent an erroneous operation in an internal circuit by reducing deterioration of signal transmitting characteristic due to a parasitic resistance and a parasitic capacity of a bus line in a semiconductor integrated circuit. CONSTITUTION:Functional blocks 1, 2, 3 and 4, and bus lines 201, 202, 203 and 204 for coupling input/output buffers 5, 6, 7 and 8 corresponding to the buffers 5, 6, 7 and 8 of the blocks 1, 2, 3 and 4 are laid in a bus connecting system. N-channel MOS transistors 9, 10, 11 and 12 which are operated as functions of switch circuits are inserted to be connected to the bus lines corresponding to the connecting points O of the bus lines. Corresponding parasitic resistances 13-20 and parasitic capacities 20-24 are interposed to the respective bus lines. |
