An area for layout of a plurality of I/O cells (called an "I/O area") is
provided in the peripheral portion of a chip and signal wirings for
transferring test signals to the I/O cells are provided in the layout
direction of the I/O cells. At least one empty cell provided in the I/O
area at a position where I/O cells are not provided has a repeater
circuit which constitutes a transfer path for the test signal. The
repeater circuit receives the test signal and outputs the test signal.
This structure provides a suitable semiconductor integrated circuit
device adaptable for an ASIC or the like, which can adjust the delay of a
test signal to be transferred along the chip's peripheral portion by
suppressing an increase in the delay and degradation in waveform
depression.