An Alternative Rectilinear Wiring Geometry
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04
I. The New Geometry Conventional organization of a chip (module or card) is to arrange the components in identical rows and columns along the major axes of the chip. The wiring tracks also run parallel to the major axes, as shown in Fig. 1. Each horizontal and vertical wiring channel intersection defines a cell with a corresponding component. The new geometry results from the rotation of the channel axes to coincide with the diagonals of the chip. Figs. 2 and 3 show the arrangement of 144 components in conventional and new geometry, respectively. The new arrangement can have two generic forms, center symmetric and axes symmetric, as shown in Fig. 4. There is little difference between the two forms in terms of all the characteristics that we shall consider.