Peripheral Component Interconnect

(redirected from Burst transfer)

peripheral component interconnect

[pə‚rif·ə·rəl kəm‚pō·nənt ′in·tər·‚kə·nek]
(computer science)
A bus standard for connecting additional input/output devices (such as graphics or modem cards) to a personal computer. Abbreviated PCI.

Peripheral Component Interconnect

(PCI) A standard for connecting peripherals to a personal computer, designed by Intel and released around Autumn 1993. PCI is supported by most major manufacturers including Apple Computer. It is technically far superior to VESA's local bus. It runs at 20 - 33 MHz and carries 32 bits at a time over a 124-pin connector or 64 bits over a 188-pin connector. An address is sent in one cycle followed by one word of data (or several in burst mode).

PCI is used in systems based on Pentium, Pentium Pro, AMD 5x86, AMD K5 and AMD K6 processors, in some DEC Alpha and PowerPC systems, and probably Cyrix 586 and Cyrix 686 systems. However, it is processor independent and so can work with other processor architectures as well.

Technically, PCI is not a bus but a bridge or mezzanine. It includes buffers to decouple the CPU from relatively slow peripherals and allow them to operate asynchronously.
References in periodicals archive ?
5" hard disks that work together in RAID 0 configuration to enable burst transfer speeds up to 110 Mbps via integrated eSATA or 80 Mbps via integrated FireWire800 interfaces.
The VMETRO Vanguard VMEbus 2eSST analyzer was used to measure burst transfer rates of 310MB/s and for sustained transfer rates of 300MB/s.
In a typical data transfer from a peripheral to the host, the device transmits an address for one clock cycle followed by a series of data values, providing a maximum burst transfer rate of up to 132 MB/sec.
It uses SCSI-2 I/F and a maximum 10MB/second burst transfer rate (synchronous transfer).
In Ultra DMA mode, a specification recommended as part of the PC 98 System Design Guide, the drive offers burst transfer rates of 33.
The Fibre Channel version will provide a burst transfer rate as high as 100MB/sec--2.
The XM-3801 B also provides a synchronous burst transfer of 10 MB/second and an asynchronous burst transfer of 5 MB/second.
Burst transfer in SCSI synchronous mode can reach 20Mbit/sec.
and a burst transfer rate to the host of 10 MB/sec.
The drive has a 900 KB/sec data transfer and an average access time of 195 milliseconds, with a burst transfer rate of 11.