Receiving an I/O signal in multiple voltage domains
US9473141B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2014 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Apr 20, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/0013
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Embodiments disclosed herein include an I/O module with multiple level shifters that establish a plurality of voltage domains. Using the level shifters, the I/O module converts data signals in a core logic voltage domain to data signals in an external voltage domain. In one embodiment, when transmitting data signals to an external device, the I/O module level shifts the data signals from a core logic voltage domain to a low voltage domain. The I/O module then level shifts the data signals from the low voltage domain to an intermediate voltage domain. The I/O module may further shift the data signals from the intermediate voltage domain to both a low voltage domain and a high voltage domain. Using the data signals from both of these domains, the I/O module outputs the data signals in a voltage domain corresponding to a communication technique used to transmit data to the external device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.