15-FireWire-USB

15-FireWire-USB - USB...

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Unformatted text preview: USB & FireWire An Overview resenter athagata Bhattacharjee Tathagata Bhattacharjee 2 FireWire Tathagata Bhattacharjee 3 FireWire (IEEE designation 1394 ) is a video serial bus interface standard offering high-speed communications and isochronous real-time data services, developed primarily by Apple Computer, completing development in 1995. Tathagata Bhattacharjee 4 ote: sochronous : Periodic signal, pertaining to transmission in which the time interval separating any two corresponding transitions is equal to the unit interval or to a multiple of the unit interval. nisochronous : periodic signal, pertaining to transmission in which the time interval separating any two corresponding transitions is not necessarily related to the time interval separating any other two transitions. Tathagata Bhattacharjee 5 It is defined in IEEE standard 1394 which is currently a composite of three documents: the original IEEE Std 1394-1995, the IEEE Std 1394a-2000 amendment, and the IEEE Std 1394b-2002 amendment. Sony's implementation of the system is known as i.Link, and uses only the four signal pins, discarding the two pins that provide power to the device in favor of a separate power connector on Sony's i.Link products. Tathagata Bhattacharjee 6 The system is commonly used for connection of data storage devices and digital video cameras, but is also popular in industrial systems for machine vision and professional audio systems. Tathagata Bhattacharjee 7 It is used instead of the more common USB due to its faster speed, higher power distribution capabilities, and because it does not need a computer host It also has native support for isochronous data transport (data that must be delivered with deterministic latency, such as audio or video). Tathagata Bhattacharjee 8 isadvantages of FireWire Apple Computer and other patent holders have demanded from users of FireWire ($0.25 per end-user system) as royalty. More expensive hardware needed to implement it ($1-$2) has prevented FireWire from displacing USB in low- end mass-market computer peripherals where cost of product is a major constraint. Tathagata Bhattacharjee 9 It can connect together up to 63 peripherals in a non-cyclic network structure (as opposed to SCSI's linear structure). It allows peer-to-peer device communication, such as communication between a scanner and a printer, to take place without using system memory or the CPU. Feature Tathagata Bhattacharjee 10 It is designed to support plug-and-play and hot swapping. Its six-wire cable is not only more convenient than SCSI cables but can supply up to 45 watts of power per port, allowing moderate-consumption devices to operate without a separate power cord....
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This note was uploaded on 07/15/2011 for the course ECO 2023 taught by Professor Mr.raza during the Summer '10 term at FAU.

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15-FireWire-USB - USB...

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