| 摘要 |
In an embodiment of a matrix switch circuit, a group provided with twelve 64-to-1 selectors is arranged by 64 pieces, that is, (12x64) pieces of 64-to-1 selectors are provided. Address information is input to the selector. STS-12 (one frame) in which twelve 8-bit STS-1 (unit data) are serially arrayed is input from 64 pieces of input terminals of the selector. The matrix switch circuit is further provided with a selecting circuit that selects specific unit data in the frame and 64 pieces of 12-to-1 selectors that forms unit data output from the selecting circuit in one frame and outputs it.
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