Very-high-density cable interconnect

Last updated
A VHDCI connector. SCSI external VHDCI 01.jpg
A VHDCI connector.

A very-high-density cable interconnect (VHDCI) is a 68-pin connector that was introduced in the SPI-2 document of SCSI-3. [1] The VHDCI connector is a very small connector that allows placement of four wide SCSI connectors on the back of a single PCI card slot. Physically, it looks like a miniature Centronics type connector. It uses the regular 68-contact pin assignment. The male connector (plug) is used on the cable and the female connector ("receptacle") on the device.

Contents

Other uses

Apart from the standardized use with the SCSI interface, several vendors have also used VHDCI connectors for other types of interfaces:

See also

Related Research Articles

<span class="mw-page-title-main">Accelerated Graphics Port</span> Expansion bus standard

Accelerated Graphics Port (AGP) is a parallel expansion card standard, designed for attaching a video card to a computer system to assist in the acceleration of 3D computer graphics. It was originally designed as a successor to PCI-type connections for video cards. Since 2004, AGP was progressively phased out in favor of PCI Express (PCIe), which is serial, as opposed to parallel; by mid-2008, PCI Express cards dominated the market and only a few AGP models were available, with GPU manufacturers and add-in board partners eventually dropping support for the interface in favor of PCI Express.

<span class="mw-page-title-main">Expansion card</span> Circuit board for connecting to a computer system to add functionality

In computing, an expansion card is a printed circuit board that can be inserted into an electrical connector, or expansion slot on a computer's motherboard to add functionality to a computer system. Sometimes the design of the computer's case and motherboard involves placing most of these slots onto a separate, removable card. Typically such cards are referred to as a riser card in part because they project upward from the board and allow expansion cards to be placed above and parallel to the motherboard.

<span class="mw-page-title-main">Graphics card</span> Expansion card which generates a feed of output images to a display device

A graphics card is a computer expansion card that generates a feed of graphics output to a display device such as a monitor. Graphics cards are sometimes called discrete or dedicated graphics cards to emphasize their distinction to integrated graphics processor on the motherboard or the CPU. A graphics processing unit (GPU) that performs the necessary computations is the main component in a graphics card, but the acronym "GPU" is sometimes also used to erroneously refer to the graphics card as a whole.

<span class="mw-page-title-main">PCI Express</span> Computer expansion bus standard

PCI Express, officially abbreviated as PCIe or PCI-e, is a high-speed serial computer expansion bus standard, designed to replace the older PCI, PCI-X and AGP bus standards. It is the common motherboard interface for personal computers' graphics cards, sound cards, hard disk drive host adapters, SSDs, Wi-Fi and Ethernet hardware connections. PCIe has numerous improvements over the older standards, including higher maximum system bus throughput, lower I/O pin count and smaller physical footprint, better performance scaling for bus devices, a more detailed error detection and reporting mechanism, and native hot-swap functionality. More recent revisions of the PCIe standard provide hardware support for I/O virtualization.

<span class="mw-page-title-main">S-Video</span> Signal format for standard-definition video

S-Video is an analog video signal format that carries standard-definition video, typically at 525 lines or 625 lines. It encodes video luma and chrominance on two separate channels, achieving higher image quality than composite video which encodes all video information on one channel. It also eliminates several types of visual defects such as dot crawl which commonly occur with composite video. Although it improved over composite video, S-Video has lower color resolution than component video, which is encoded over three channels.

<span class="mw-page-title-main">Serial communication</span> Type of data transfer

In telecommunication and data transmission, serial communication is the process of sending data one bit at a time, sequentially, over a communication channel or computer bus. This is in contrast to parallel communication, where several bits are sent as a whole, on a link with several parallel channels.

A PCI Mezzanine Card or PMC is a printed circuit board assembly manufactured to the IEEE P1386.1 standard. This standard combines the electrical characteristics of the PCI bus with the mechanical dimensions of the Common Mezzanine Card or CMC format.

<span class="mw-page-title-main">D-subminiature</span> Type of electrical connector

The D-subminiature or D-sub is a common type of electrical connector. They are named for their characteristic D-shaped metal shield. When they were introduced, D-subs were among the smallest connectors used on computer systems.

<span class="mw-page-title-main">HDMI</span> Proprietary interface for transmitting digital audio and video data

High-Definition Multimedia Interface (HDMI) is a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from an HDMI-compliant source device, such as a display controller, to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for analog video standards.

<span class="mw-page-title-main">Diamond Multimedia</span> American company

Diamond Multimedia is an American company that specializes in many forms of multimedia technology. They have produced graphics cards, motherboards, modems, sound cards and MP3 players; however, the company began with the production of the TrackStar, a PC add-on card which emulated Apple II computers. They were one of the major players in the 2D and early 3D graphics card competition throughout the 1990s and early 2000s.

<span class="mw-page-title-main">AMD CrossFire</span> Brand name by AMD; multi-GPU technology

AMD CrossFire is a brand name for the multi-GPU technology by Advanced Micro Devices, originally developed by ATI Technologies. The technology allows up to four GPUs to be used in a single computer to improve graphics performance.

<span class="mw-page-title-main">Low-force helix</span>

A low-force helix (LFH-60) is a 60-pin electrical connector with signals for two digital and analog connectors. Each of the pins is twisted approximately 45 degrees between the tip and the plastic frame which holds the pins in place. Hence "helix" in the name.

AMD FireMV, formerly ATI FireMV, is brand name for graphics cards marketed as a Multi-Display 2D video card, with 3D capabilities same as the low-end Radeon graphics products. It competes directly with Matrox professional video cards. FireMV cards aims at the corporate environment who require several displays attached to a single computer. FireMV cards has options of dual GPU, a total of four display output via a VHDCI connector, or single GPU, a total of two display output via a DMS-59 connector.

<span class="mw-page-title-main">Parallel SCSI</span> Original SCSI storage interface

Parallel SCSI is the earliest of the interface implementations in the SCSI family. SPI is a parallel bus; there is one set of electrical connections stretching from one end of the SCSI bus to the other. A SCSI device attaches to the bus but does not interrupt it. Both ends of the bus must be terminated.

The Nvidia Quadro Plex is an external graphics processing unit (Visual Computing System) designed for large-scale 3D visualizations. The system consists of a box containing a pair of high-end Nvidia Quadro graphics cards featuring a variety of external video connectors. A special PCI Express card is installed in the host computer, and the two are connected by VHDCI cables.

<span class="mw-page-title-main">Mini DisplayPort</span> Miniaturized version of the DisplayPort connector

The Mini DisplayPort is a miniaturized version of the DisplayPort audio-visual digital interface.

Audio connectors and video connectors are electrical or optical connectors for carrying audio or video signals. Audio interfaces or video interfaces define physical parameters and interpretation of signals. For digital audio and digital video, this can be thought of as defining the physical layer, data link layer, and most or all of the application layer. For analog audio and analog video these functions are all represented in a single signal specification like NTSC or the direct speaker-driving signal of analog audio.

<span class="mw-page-title-main">Active cable</span>

Active cables are copper cables used for data transmission that use an electronic circuit to boost the performance of the cable. Without an electronic circuit, a cable is considered a passive cable. Passive cables are prone to data degradation from channel impairments, including attenuation, crosstalk, and group velocity distortion. In active cables, a circuit using one or several integrated circuits is embedded in the cable to compensate for some or all of these impairments. This active boosting allows cables to be more compact, thinner, longer, and to transmit data faster than passive cables.

The graphics processing unit (GPU) codenamed Radeon R600 is the foundation of the Radeon HD 2000 series and the FireGL 2007 series video cards developed by ATI Technologies. The HD 2000 cards competed with nVidia's GeForce 8 series.

<span class="mw-page-title-main">Dell Inspiron desktop computers</span> Desktop computer series by Dell

On June 26, 2007, Dell released the new Inspiron desktop series, under the Dell Inspiron branding, as a replacement to the Dell Dimension desktop computers.

References

  1. "SCSI-3" . Retrieved 2021-06-14.
  2. "BOB1038 datasheet" (PDF). AudioScience.