| 摘要 |
<p>PURPOSE:To construct many types of circuits having different functions by providing a function altering dummy wiring pattern and/or circuit element at least to one of an LSI chip and a mother chip, and selectively providing salient electrodes on the terminals thereof. CONSTITUTION:Assume, for example, that a TTL level is converted to an ECL level. Assume that the input/output level of an LSI chip placed on a mother chip 5 is TTL level. When the LSI chip is connected with a salient electrode 2, the input/output level as a multichip module becomes the TTL level. When the LSI chip is connected with a salient electrode 3, the input/output level as a multichip module becomes the ECL level. Accordingly, if a level converter 6 is associated in the chip 5, the input/output level of the multichip module can be freely switched by the position for placing the LSI chip. Thus, many types of circuits having different functions can be composed.</p> |
