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Message
From: KO TOM<tomko81@h...>
Date: Tue Mar 23 16:07:36 CET 2004
Subject: [usb] MAx packet size
If you declared to the host that your max packet size is 64 , when the host recieve your sized 60 packet, it will suppose your device have finish the transcation as it recieve a packet with size smaller than max packet size. Normally it will not send you an IN TOKEN anymore so you can't hand in your last sized 4 packet.And why you need to divided your packet into two ?
Regards,
TOM
>From: "zhangchun" <zhangchun@t...>
>Reply-To: "Discussion list about free,open source USB IP core" <usb@o...>
>To: "Discussion list about free,open source USB IP core" <usb@o...>
>Subject: Re: [usb] MAx packet size
>Date: Tue, 23 Mar 2004 17:26:52 +0800
>
>Why a 0 byte packet should be responded ?
>
>
>----- Original Message -----
>From: "Zhu Xiaolin" <zhuxl@v...>
>To: "Discussion list about free,open source USB IP core" <usb@o...>
>Sent: Tuesday, March 23, 2004 3:36 PM
>Subject: ç”å?: [usb] MAx packet size
>
>
> > No. The device should respond 64 bytes first and then a 0 byte packet.
> >
> > -----?Ÿå??®ä»¶-----
> > ?‘件äº? usb-bounces@o... [mailto:usb-bounces@o...]ä»?¡¨ P.Ravi
> > ?‘é€æ—¶?? 2004å¹???3??15:07
> > ?¶ä»¶äº? usb
> > 主é?: [usb] MAx packet size
> >
> >
> > Hi
> >
> > If an endpoint max packet size is 64 bytes and host requests for an in
> > transaction( setup packet ) of size 64 bytes,
> > is it fine if device responds with 60 bytes and then 4 bytes.( assuming
> > each time there will be an IN token from host).
> >
> > regards
> >
> >
> > _______________________________________________
> > http://www.opencores.org/mailman/listinfo/usb
> >
> > _______________________________________________
> > http://www.opencores.org/mailman/listinfo/usb
> >
>
>_______________________________________________
>http://www.opencores.org/mailman/listinfo/usb
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