Rychlost USB

[STRAKA, Matus]

USB verzie 1.0, 1.1 zvlada 12 Mbit/s (zbernica ako celok). To je 1,5
Mbyte/s. V tom je nutne zapocitat este nejaku cas  pre kontrolne/riadiace
pakety (asi 10%).

Maximum na prazdnej zbernici pre jedno zariadenie s Bulk prenosom (teda
napr. LAN adapter) je 19 paketov po 64 bytov za milisekundu, teda max 1,16
Mbyte /s. (plus paket  ma 13 bytov overhead).

Pri interrupt prenose je to max 64kbyte/s.
Pri izochronnom prenose je to max. 975 kbyte/s  (pre jedno zariadenie na
zbernici).

Pre USB verzie 2.0 je zaklad 400Mbit/s (=50 Mbyte/s), ostatne hodnoty sa
tiez zodpovedajuco zmenia.

Mt
------------------------------------------------
Ing. Matus Straka
Design Engineer
Embedded microcontroller solutions

tel.: +421/(0)2/59427143
mail: straka@infotrust.sk, magpie@pobox.sk

Infotrust a.s.
Data Encryption and Security
 www: http://www.taureus.sk
 www: http://www.infotrust.sk
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> -----Original Message-----
> From: owner-hw-news@list.gin.cz
> [mailto:owner-hw-news@list.gin.cz]On Behalf Of Libor Kavan
> Sent: Wednesday, April 24, 2002 10:19 PM
> To: hw-news@list.gin.cz; hw-news@list.gin.cz
> Subject: Rychlost USB
>
>
> Zdravim,
> nevi nekdo jaka je max. prenosova rychlost USB ? Mam pujceny adapter pro
> wireless network na USB a v navodu machrujou,ze to zvlada tech
> 11Mb,ale IMHO
> to je blbost...
>
> S pozdravem           with best regards
> ------------------------------------------------------------
>                  EZA-TV Vrchlabi
>     Libor Kavan               Phone & Fax:+420 438 521 232
>     Dlouha 421                Fax:+420 438 521 262
>     543 03 Vrchlabi III       mailto:lkavan@krkonose.cz
>     Czech Republic            http://www.krkonose.cz/eza-tv
>  ------------------------------------------------------------
>
>