USB protokol a el. harakteristiky

[STRAKA, Matus]

najlepsi link je zacat na www.usb.org.

Zapojenie USB: Vcc, GND, D+ a D-. D+ a D- su asynchronne diferencialne data.
Rychlost je pri USB 1.1 do 12MBit/s, hodiny zbernice 48 MHz.

Dekodovanie je dost zlozite (aj analogova cast, aj digitalna). Vlastny vyvoj
sa IMHO neoplati, lepsie su hotove radice. Pre stranu device napr. National
Semiconductor USBN960x, kde x 2,3,4, nieco robi aj Philips, nieco Cypress,
nieco Anchor.

Mt


> -----Original Message-----
> From: owner-hw-news@list.gin.cz
> [mailto:owner-hw-news@list.gin.cz]On Behalf Of Ales Donda
> Sent: Wednesday, February 27, 2002 3:01 PM
> To: 'hw-news@list.gin.cz'
> Subject: USB protokol a el. harakteristiky
>
>
> Mozn? to tady uz kdysi zaznelo.
>
> Sh?n?m zapojen? USB, ale predevs?m jeho elektrik? charakteristiky a
> komunikacn? protokoly.
>
> Nem? nekdo link nebo dokumentaci?
>
>
> D?ky  Ales
>
>