Semiconductor integrated circuit for supplying a control signal to a plurality of object circuits
US5822255A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1997 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Jan 30, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/0816
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A semiconductor integrated circuit has first and second delay controllers for receiving an input signal, a plurality of object circuits for receiving an internal signal from the first delay circuit through a real line, and a phase comparator. The phase comparator receives the input signal and a dummy internal signal from the second delay controller through a dummy line, and compares the phases of the received signals with each other. Further, the phase comparator controls delays in the first and second delay controllers according to the comparison result. The length of the real line from the first delay controller to any one of the object circuits is substantially identical, and a load value of the dummy line is substantially equal to that of the real line between the first delay controller and any one of the object circuits. Therefore, each of the object circuits or pads receives a phase-locked control signal without regard to the physical position thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.