RS-485: Imported from Wikipedia (overwrite)

2026-05-03T14:42:46Z

Imported from Wikipedia (overwrite)

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{{Short description|VMEbus performance improvement standard}}
[[File:Locale_RS6_Das Bild zeigt eine 16-Slot VXS Backplane mit 14 Node-Slots und 2 Switch Slots.jpg|thumb|Backplane with VXS connectors (black)]]
VMEBus Switched Serial, commonly known as '''VXS''', is an [[ANSI]] standard (ANSI/VITA 41)<ref>[http://www.vita.com/Resources/Marketing%20Alliances/VXS/vxs_faq.pdf Frequently Asked Questions on VXS]</ref> that improves the performance of standard parallel [[VMEbus]] by enhancing it to support newer switched serial fabrics. The base specification (ANSI 41) defines all common elements of the standard, while "dot"-specifications (ANSI 41.''n'') define extensions which use specific serial fabrics (such as [[PCI Express]], [[RapidIO]], StarFabric from [[Dolphin Interconnect Solutions]] and [[InfiniBand]]) or additional functionality.<ref>[http://www.mc.com/uploadedfiles/VXS-technology-overview.pdf Technology Overview: VITA 41 (VXS)]</ref> VXS is backward compatible with VMEBus. It is defined by the VME International Trade Association (VITA) working group.

== Specification ==
In common with other similar standards, VXS comprises a ‘base line’ specification, which defines the basic mechanical and electrical elements of VXS, together with a series of ‘dot level’ specifications, one or more of which must be implemented to create a functional module. The specifications are as follows:

{| class="wikitable"
!
! Basic module
|-
! VITA 41.0
| VXS Base Standard - ANSI ratified
|-
! VITA 41.1
| InfiniBand Protocol on VXS
|-
! VITA 41.2
| Serial RapidIO Protocol on VXS
|-
! VITA 41.3
| VXS Ethernet 1000 Mbit/s Baseband IEEE 802.3 Protocol Layer Standard
|-
! VITA 41.4
| VXS 4X PCI Express Protocol Layer Standard
|-
! VITA 41.10
| Live Insertion System Requirements for VITA 41 Boards
|-
! VITA 41.11
| VXS Rear Transition Module Standard
|}

==See also==
*[[VPX]]

==References==
{{reflist}}

{{Computer bus}}

[[Category:Computer buses]]
[[Category:American National Standards Institute standards]]

VXS - Revision history

RS-485: Imported from Wikipedia (overwrite)