| 摘要 |
<p>An LSI system includes: a multi-layer print board (300); and a plurality of LSI circuit chips (100 to 103) mounted on the multi-layer printed circuit board, each including a plurality of pins (E,520), a reference voltage terminal (F), a pin scan out terminal (G) and a plurality of pin scan out circuits (130i) corresponding to the pins on a one-to-one basis. The multi-layer printed circuit board includes a reference voltage feeding layer (310) formed therein in a form of a mesh or a sheet. By electrically connecting each reference voltage terminal of the plurality of LSI circuit chips to the reference voltage feeding layer, a substantially equal reference voltage can be fed to each LSI and a voltage drop thereof is reduced.</p> |
