IEEE 1394, USB, and AGP High Speed Transfer

AGP Accelerated Graphics Port Intended to create a faster means of retrieving data from the computer to the graphics card Simply enhanced from the PCI architecture Designed by Intel Corporation

AGP – Purpose Of Design As technology progresses and overall demand increases, the demand from the user for fast and smooth flowing graphics also increases Software demands are continuously growing 3D Rendering has a high demand for memory bandwidth

AGP vs. PCI Enhanced from PCI architecture running at 66 MHz Four Enhancements Made: Deeply Pipelined memory read and write operations, fully hiding memory access latency Demultiplexing of address and data on bus to allow almost 100% bus efficiency New AC timing in the 3.3v electrical specification that provides for one or two data transfers per 66-MHz clock cycle, allowing for data throughput in excess of 500 MB/s A new low voltage electrical specification that allows four data transfers per 66MHz clock cycle, providing real data throughput of up to 1 GB/s Intel Corporation (AGP Interface Specification)

AGP vs. PCI Architecture of AGP is identical to PCI except for the four enhancements of AGP AGP’s work on an independent bus than that of the PCI ports The physical make-up of PCI cards and AGP cards are not interchangeable

IEEE 1394 Created by Apple in 1986 IEEE standard 1394 created 1995 FireWire IEEE standard 1394 created 1995 High speed data transfer Up to 400 mb/s Working on 1 gb/s Much faster than IDE and SCSI

IEEE 1394 – Cable Design 6 wires Two power Two twisted pairs

IEEE 1394 – Limitations 1394 Cable can not exceed 4.5 meters Can be increased 63 1394 devices can be connected in a chain Non-cyclical

IEEE 1394 – Application Video Audio Hard Drives DVD

USB Universal Serial Bus Designed by Intel Corporation Originally Designed for: Connection of PC to Telephone Ease-Of-Use Port Expansion

USB 2 USB 2 was born as a modification of the original USB architecture Designed to deal with the increasing technology demand and increasing need to deal with large amounts of data Digital Media is a perfect example of increasing needs to deal with large amounts of data due to high resolution pictures and movies which create high density files

USB 1 vs. USB 2 USB 1 Minimum transfer rate of 1.5 MB/s Maximum transfer rate of 12 MB/s USB 2 Maximum transfer rate of 480 MB/s USB 2 has a maximum transfer rate 40x faster than USB 1!

USB - Connectors Connector A is commonly located upstream from the host It usually connects to the PC Connector B is commonly located downstream from the USB device It usually connects to the peripheral

USB – So Much More There is a much more complex system behind USB than what has been shown here USB often supplies its peripherals with its own power supply, indicating a sophisticated electrical system Most of the concepts are out of our comprehension at this point These concepts can be found in the USB Specification found at WWW.INTEL.COM