Re: [usb] NEW ! USB 1.1 Function IP Core

["andrewxue" <andrewxue@vimicro.com>]

Dear ,

As a newcomer of this maillist.This e-mail is my first mail. So could you give me some good beginning ?

I am not familiar with the UTMI spec,is it a new-developed standard ? Could anyone tell me where can I find it or just send it to me directly,thanks in advance ,

I check the previous mail,do you involve in some usb host controller design project ? Is it only for digital IP development ?

Best Regards,
Andrew

----- Original Message ----- 
From: <meizx@ict.ac.cn>
To: <usb@opencores.org>
Sent: Thursday, October 17, 2002 8:26 PM
Subject: Re: [usb] NEW ! USB 1.1 Function IP Core


> Mr.Rudolf Usselmann,
>   According to UTMI Specification Reversion1.05,UTM implemented such 
> functions as NRZI encoding and decoding,HS&FS DLL,receive and 
> transmit state machine,etc..It seems that your source code has the 
> same function as UTM except the analog part.Thank you for the 
> contributions.
>   With regard to the host controller,if the USB1.1 is to be implemented,I 
> think most of the work you have done is valuable.As a result,the 
> remaining difficulty lies in USB STATE Control,List Processor,and Root 
> Hub Cofiguration.I am interested in host controller,however,some 
> difficult points should be clarified before starting the project.
>   I wish someone could tell the difference between the root hub and 
> general hub.
> 
> Regards
> MeiZX
> meizx@ict.ac.cn
>   
> ----- Original Message ----- 
> From: Rudolf Usselmann <rudi@a... > 
> To: usb@o...  
> Date: Thu, 10 Oct 2002 13:09:39 +0700 
> Subject: Re: [usb] NEW ! USB 1.1 Function IP Core 
> 
> > 
> > 
> > On Thursday 10 October 2002 12:52, meizx@i...  wrote: 
> > > There is no UTM notion in USB Spec. Version1.1.Why the new 1.1 
> > 
> > It's "UTMI" and not "UTM" !  The UTMI specification is beyond the 
> > USB specification. It has been developed AFTER USB 1.1. 
> > 
> > Nevertheless it can be applied to USB 1.1 as well. The reason I 
> > have 
> > chosen it, is because I wanted to provide a standardized PHY and 
> > USB 1.1 
> > cores independent of each other. For example, there is no reason 
> > why 
> > the USB 1.1 PHY could not be adopted to work at high-speed (USB 
> > 2.0). 
> > 
> > > function core provide this interface.I read the white paper 
> > from usb.org 
> > > website "Designing a robust usb serial interface 
> > engine(SIE)".Where to 
> > > find the codes implementing the DPLL in this function? 
> > 
> > The DPLL is in the  Phy NOT SIE ! 
> > 
> > > Regards 
> > > MeiZX 
> > 
> > rudi 
> > ------------------------------------------------ 
> > www.asics.ws   - Solutions for your ASIC needs - 
> > FREE IP Cores: http://www.asics.ws/free_ip.shtml 
> > 
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