Signal transmission circuit, semiconductor integrated circuit, and signal transmission circuit adjustment method
US8854108B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 2014 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Jan 14, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0278
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transmission circuit is formed such that plural driver units of each driver circuit are connected together in parallel. A code setting section detects a voltage Vms output from a replica circuit corresponding to a driver unit of a driver circuit, and detects a voltage Vmo output from a replica circuit corresponding to one driver unit of the driver circuit, and based on a ratio of the voltages Vms, Vmo, sets operation numbers Na to Nd of driver units for each of the driver circuits such that the output resistance value of each of the driver circuits becomes pre-set output resistance values Roa to Rod. The driver circuit has a number of driver units according to the operation number connected together in parallel and operating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.