VICbus; VME inter-crate bus a versatile cable bus
- Computing and Networks Div., CERN, 1211 Geneva 23 (CH)
This paper discusses VICbus, a multiplexed, multi-master cable bus primarily intended for interconnecting backplane bus systems, such as VMEbus, but which may also be used wherever a high performance, general purpose cable bus is required. It is implemented using differential line transmission to interconnect up to 31 devices on a total cable length of 100 meters. Both compelled (asynchronous) and non-compelled (synchronous) data transmission protocols are specified. The compelled protocol is essential when the data transfer protocols of VMEbus backplanes are to be interlocked for software transparent operation, but may also be used for transfers between memories within VICbus devices, not involving associated backplanes. The non-compelled protocol is used in the latter case, when performance is a major factor. An efficient bus arbitration mechanism takes into consideration the long signal propagation times on cables. A simple interrupt mechanism is specified permitting the transparent use of interrupts on interconnected VMEbus backplanes.
- OSTI ID:
- 7233563
- Report Number(s):
- CONF-9106122-; CODEN: IETNA
- Journal Information:
- IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Vol. 39:2; Conference: 7. international conference on real time computer applications in nuclear, particle and plasma physics, Juelich (Germany), 18-28 Jun 1991; ISSN 0018-9499
- Country of Publication:
- United States
- Language:
- English
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990200* - Mathematics & Computers
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Electron Devices & Circuits- (1990-)