Cascaded programming with multiple-purpose pins
US6314550A · kind A · utility
38Cited by
26References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1998 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Jun 9, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2273
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A technique to provide higher system performance by increasing amount of data that may be transferred in parallel is to increase the number of external pins available for the input and output of user data (user I/O). A technique is to allow a pin to be used for multiple purposes, a dedicated operation during a first mode and for user I/O during other modes. A pin (515) may be used to perform a handshaking function during a configuration mode and user I/O during a normal or user mode. The technique may be used during the cascaded configuration of programmable integrated circuits, and in conjunction with in-system programming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.