On-chip packet-switched communication system
US7555001B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2005 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Mar 7, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/42
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for routing a data packet between N elements includes N network interfaces respectively connected to the N elements, with N being an even integer, and an on-chip packet-switched communication network arranged in a ring structure. The packet-switched communication network includes N routers respectively connected to the N interfaces, and N pairs of opposite uni-directional ring links. Each pair of ring links couples two adjacent routers in the ring structure, and each ring link provides two virtual channels. There are N/2 pairs of opposite uni-directional crossing links, with each pair of crossing links coupling two diametrically opposite routers in the ring structure. Processing circuitry is distributed within the N routers and the N network interfaces for determining direction of the data packet to be transmitted over a path from a source element to a destination element in the ring structure, and for determining at each router in the path which virtual channel is to be used to avoid deadlocks in the transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.