Communication protocol between master and slave device with register information sharing
US5630152A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1994 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Oct 3, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4291
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for full duplex communication between master and slave devices (403, 422) coupled by a serial peripheral interface (420) includes the steps of the slave device (422) updating a status register (421) based upon an event, after which the slave device (422) transmits a communication request to the master device (403). When the master device (403) thereafter takes the slave-select line low to initiate communication, the slave device (422) automatically transmits the contents of the status register (421) over the master-in-slave-out line. At the same time, the master device (403) transmits an "empty" byte of information over the master-out-slave-in line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.