Start detection circuit, stop detection circuit and circuit for the detection of data transmitted according to the IIC protocol
US7174473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2003 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Jul 26, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/044
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A start-detection circuit and a stop-detection circuit detect the start condition and the stop condition in a data signal associated with a clock signal according to the IIC protocol. The start-detection circuit comprises: a first detector to produce a first reset signal when a trailing edge of the data signal is detected; a counter to count pulses of a reference signal when the first reset signal is received, and to produce an enabling signal when the number of pulses counted has reached a predefined number; a second detector to store the enabling signal when a trailing edge of the clock signal is detected. The stop-detection circuit comprises a third detector to produce a stop signal when a leading edge of the data signal is detected after the detection of a leading edge of the clock signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.