摘要:
After automatic cell placement, the following steps are performed before performing automatic inter-cell routing. (S22) Estimated wires having Manhattan-length path are connected between same-node terminals of cells, and detected and counted is a crosstalk error that parallel-wire length is more than a predetermined value. (S23) The detected error is resolved by moving cells closely spaced less than a predetermined interval apart and connected to the error-detected estimated wires; the cell movement data is stored in a storage device; and such processes are repeated N times; and the cell placement data is modified on the basis of the cell movement data corresponding to the minimum value of error-count values of all the N times. (S24) If the minimum value is not 0, (S25) a buffer cell is inserted in the error-detected estimated wire. (S27) Obtained is the wire density of estimated wiring having Manhattan-length path, and if the density is more than a predetermined value, the design-target frame is enlarged in size, and the process returns to the automatic cell placement process.
摘要:
A design support method executed by a computer includes: detecting a layout position of a first terminal in a cell as a first layout position from layout data including a cell of a macro which is arranged at a plurality of orientations, the first terminal being arranged at a first orientation; calculating a second layout position of a first terminal which is arranged at a second orientation which is different from the first orientation based on a variation from the first orientation to the second orientation and the first layout position; associating the second layout position with the first layout position and the layout data; and outputting an association result.
摘要:
A semiconductor integrated circuit includes a shielded wire line and a shielding wire line provided for the shielded wire line and divided into a plurality of segments in a longitudinal direction of the shielded wire line.
摘要:
A design support method executed by a computer includes: detecting a layout position of a first terminal in a cell as a first layout position from layout data including a cell of a macro which is arranged at a plurality of orientations, the first terminal being arranged at a first orientation; calculating a second layout position of a first terminal which is arranged at a second orientation which is different from the first orientation based on a variation from the first orientation to the second orientation and the first layout position; associating the second layout position with the first layout position and the layout data; and outputting an association result.
摘要:
A semiconductor integrated circuit includes a shielded wire line and a shielding wire line provided for the shielded wire line and divided into a plurality of segments in a longitudinal direction of the shielded wire line.
摘要:
A semiconductor integrated circuit includes a shielded wire line and a shielding wire line provided for the shielded wire line and divided into a plurality of segments in a longitudinal direction of the shielded wire line.
摘要:
A semiconductor integrated circuit includes a shielded wire line and a shielding wire line provided for the shielded wire line and divided into a plurality of segments in a longitudinal direction of the shielded wire line.
摘要:
A semiconductor integrated circuit includes a shielded wire line and a shielding wire line provided for the shielded wire line and divided into a plurality of segments in a longitudinal direction of the shielded wire line.
摘要:
A semiconductor integrated circuit includes a shielded wire line and a shielding wire line provided for the shielded wire line and divided into a plurality of segments in a longitudinal direction of the shielded wire line.
摘要:
A semiconductor integrated circuit, includes a shielded wire line and a shielding wire line provided for the shielded wire line and divided into a plurality of segments in a longitudinal direction of the shielded wire line.