Integrated circuit with global hotsocket architecture
US8013632B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2009 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Dec 15, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/177
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Integrated circuits such as programmable logic devices are provided with hotsocket detection circuitry. The hotsocket detection circuitry monitors signals on data pins and power supply voltages. If the data pins become active before the power supply voltages have reached appropriate levels, a hotsocket condition is identified. When a hotsocket condition is identified, driver circuitry on the integrated circuit can be disabled by a hotsocket signal. The integrated circuit may include multiple blocks of input-output circuitry, each of which includes a local hotsocket circuit that uses global hotsocket and power-on-reset signals in disabling input-output circuitry in that input-output block. A power supply circuit in each input-output block may ensure that the local hotsocket circuit in that input-output block is powered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.