SPI-4.2

SPI-4.2

SPI-4.2 is a version of the System Packet Interface published by the Optical Internetworking Forum. It was designed to be used in systems that support OC-192 SONET interfaces and is sometimes used in 10 Gigabit Ethernet based systems.

A typical application of SPI-4.2 is to connect a framer device to a network processor. It has been widely adopted by the high speed networking marketplace.

The interface consists of (per direction):
* sixteen LVDS pairs for the data path
* one LVDS pair for control
* one LVDS pair for clock at half of the data rate
* two FIFO status lines running at 1/8th of the data rate
* one status clock

The clocking is Source-synchronous and operates around 700 MHz. Implementations of SPI-4.2 have been produced which allow somewhat higher clock rates. This is important when overhead bytes are added to incoming packets.

PMC-Sierra made the original OIF contribution for SPI-4.2. That contribution was based on the PL-4 specification that was developed by PMC-Sierra in conjunction with the SATURN Development Group.

The physical layer of SPI-4.2 is very similar to the HyperTransport 1.x interface, although the logical layers are very different.

External links

* [http://www.oiforum.com/public/impagreements.html OIF Interoperability Agreements]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • SPi — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. {{{image}}}   Sigles d une seule lettre   Sigles de deux lettres > Sigles de trois lettres …   Wikipédia en Français

  • Spi — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. {{{image}}}   Sigles d une seule lettre   Sigles de deux lettres > Sigles de trois lettres …   Wikipédia en Français

  • SPI — may refer to:Technology* System Packet Interface, family of interfaces from the Optical Internetworking Forum ** SPI 3, a system packet interface designed to be used in systems that support OC 48 SONET interfaces ** SPI 4.2, a system packet… …   Wikipedia

  • SPI-3 — or System Packet Interface Level 3 is the name of a chip to chip, channelized, packet interface widely used in high speed communications devices. It was proposed by PMC Sierra based on their PL 3 interface to the Optical Internetworking Forum and …   Wikipedia

  • SPI — Saltar a navegación, búsqueda SPI son las siglas de: Serial Peripheral Interface, un bus estándar de comunicaciones Software Products International editores de software que crearon Open Access, en su momento el paquete integrado líder del mercado …   Wikipedia Español

  • SPI — может расшифровываться как: Serial Peripheral Interface System Programming Interface Service Provider Interface Software in the Public Interest, Inc (SPI Inc.)  некоммерческая организация, представляющая Debian и другие проекты Stateful… …   Википедия

  • SPI — steht für: Schedule Performance Index, Verhältniszahl von geleisteter zu geplanter Arbeit Security Parameter Index, ein eindeutiger Bezeichner einer Security Association bei IPsec Serial Peripheral Interface, ein von Motorola entwickeltes… …   Deutsch Wikipedia

  • špı̏c — špı̏c1 m 〈N mn evi〉 reg. kinol. 1. {{001f}}ime za korpulentnog njemačkog psa srednje veličine i bogate dlake, koji se može smatrati pretkom svih pasmina pasa 2. {{001f}}skupno ime za više psećih vrsta i pasmina, od patuljastih pasa do špiceva u… …   Veliki rječnik hrvatskoga jezika

  • špı̏ca — špı̏c|a ž 〈G mn špîcā〉 reg. 1. {{001f}}vrh, vršak, šiljak 2. {{001f}}glavni naslov s popisom glumaca i ostalih suradnika na početku filma [najavna ∼a] 3. {{001f}}vrhunac čega [∼a sezone] 4. {{001f}}vrijeme najintenzivnijeg gradskog prometa kad se …   Veliki rječnik hrvatskoga jezika

  • spi- — *spi germ., Verb: nhd. spitz sein ( Verb); ne. be (Verb) pointed; Hinweis: s. *spīkō, *spīkra , *spitja ; Etymologie: idg. *spē̆i (1), *pē̆i , *spī̆ , *pī̆ …   Germanisches Wörterbuch

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”