Ieee p1386.1 draft 2.2 pci pdf

Multiple mechanical implementations fragments the market and destroys economy of scale for manufacturing, engineering, sales and marketing. A single mechanical definition builds larger markets with many more unique functions being provided for the multitude of user applications, and at a lower price. Both iee suppliers and users win by enjoying the benefits of a larger unified market. In when the effort to develop a mezzanine card standard was started, there seemed to be a market need to shrink the SBus IEEE mechanical form factor such that it would fit in a single VME board slot.

After the first sponsor ballot April, a new bus architecture was introduced to the market that rapidly gained large market interest. This mechanical definition is based on IEEE Figure illustrates a single size and a double size mezzanine card defined by this draft standard.

The size and shape of desktop computers, portable computers, servers and other similar types of computers varies considerably, depending on specific target markets and associated needs. Figure illustrates how a CMC could be mounted inside a desktop or portable computer host. The host may place low height components under the mezzanine card for additional functionality.

The host is to provide one or more slot opening s into which the mezzanine card s are plugged. The host slot opening provides mechanical support as well as EMI shielding. The local bus interface to the host computer is provided via one or more connectors between the mezzanine card and the host board. These connectors reside on the rear of the mezzanine card. At the time this standard was developed and approved, one child standard was developed and approved p This is the P In the future, additional child standards can be developed that use the basic mechanical definition from this standard but have different local buses.

Note that the P Drawings are not to scale. First angle projection has been used throughout this draft standard. This defines the actual dimensions of a 25 mm metric equipment practice. These actual dimensions are derived from coordination dimensions using the principle of boundary and axis references illustrated in IEEE Std [9] and IEC [3]. They are also ieew when extending this standard with additional dimensions where such extensions are permitted and when alternative positions of piece parts are described.

In such cases, it is obvious that iees relationships between involved dimensions shall be maintained. References The following publications are used in conjunction with this standard: Limits and Methods of Measurement, www.

This draft standard defines the mezzanine card mechanics for these types of applications. This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website.

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These cookies do not store any personal information. Software No Comment. This website uses cookies to improve your experience. Not all applications will need all the connectors. This minimum time period shall be 10 bus clock cycles long. Whenever two slots are provided on the host computer, they shall be adjacent to one another as defined in the respective figures.

It is recommended that mezzanine card vendors list the shock and vibration standards, and to which level s that are met in the product specifications. See chapter 6 of this draft standard for the required mappings. The mezzanine stand-off shall be an internal part that is permanently attached to the mezzanine card.

This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website.

We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience. Necessary cookies are absolutely essential for the website to function properly. Which of these voltages shall be provided is defined in the specific bus standard: The angular mis-alignment of any connector shall not exceed 1.

The associated keying pins are defined in the next chapter. Designers shall implement specific mandatory requirements to ensure interchangeably and to claim conformance with the standard. After the first sponsor ballot April, a new bus architecture was introduced to the market that rapidly gained large market interest. This website uses cookies to improve your experience while you navigate through the website.

Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent.

You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience. Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website.