Apparatus and methods for improved input/output cells
US7239170B2 · kind B2 · utility
23Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2003 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | May 25, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/1093
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods are provided for improving data exchanges between electronic devices, such as memory controllers and RLDRAMs. An I/O cell includes a signal pad for transferring a first signal to an electronic device coupled thereto and for receiving a second signal from the electronic device. In one aspect, a duty cycle controller is coupled to the signal pad for balancing a duty cycle of the first signal with respect to a clock signal. In another aspect, dynamic switchable termination is coupled to the signal pad for providing termination impedance when the I/O cell is receiving the second signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.