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Message
From: mdennis97@h...
Date: Sat, 14 Dec 2002 05:02:19 -0100
Subject: Re: [usb] dout of usb 1.1 function core
Thanks,rudi.You are right.I made a mistake for these wires.
I have another question:why some signals of the PL module were not
handled?
ie.,token_valid,int_to_set,int_seqerr_set,pid_cs_err,nse_err,crc5_err,rx_s
ize,rx_done,etc..
Regards
Dennis
----- Original Message -----
From: Rudolf Usselmann <rudi@a... >
To: usb@o...
Date: 04 Dec 2002 22:20:03 +0700
Subject: Re: [usb] dout of usb 1.1 function core
>
>
>
> Dennis,
>
> please understand that I can not clarify each of the 50 emails I
> get every day.
>
> Honestly I don't understand what the point of confusion is, but
> let me assure you that this core has been implemented in a product
> that is shipping and works just fine !
>
> Try to read through the code and run a few simulations, look at
> the waveforms at different levels, may be that will help to
> understand what is going on.
>
> Good Luck !
>
> rudi
> ------------------------------------------------
> www.asics.ws - Solutions for your ASIC needs -
> NEW ! 3 New Free IP Cores this months (so far :*)
> FREE IP Cores --> http://www.asics.ws/ <---
> ----- ALL SPAM forwarded to: UCE@F... -----
>
> On Wed, 2002-12-04 at 21:28, M Dennis wrote:
> > hi,rudi
> >
> > I am a little confused with your USB 1.1 Function IP Core.In
> usb1_core.v,
> >
> > // In endpoints only
> > always @(posedge clk_i)
> > case(ep_sel) // synopsys full_case parallel_case
> > 4'h0: tx_data_st <= #1 ep0_dout;
> > 4'h1: tx_data_st <= #1 ep1_din; // why not ep1_dout?
> > 4'h2: tx_data_st <= #1 ep2_din;
> > 4'h3: tx_data_st <= #1 ep3_din;
> > 4'h4: tx_data_st <= #1 ep4_din;
> > 4'h5: tx_data_st <= #1 ep5_din;
> > 4'h6: tx_data_st <= #1 ep6_din;
> > 4'h7: tx_data_st <= #1 ep7_din;
> > endcase
> >
> > epn_din is input wire,which should not connected to assigned
> to an output
> > port,isn't it?I think the data stream will flow from epn_dout
> to PL module
> > via tx_data_st.
> >
> > Similar dout to the following code in the same file.
> >
> > assign ep1_dout = rx_data_st;
> > assign ep2_dout = rx_data_st;
> > assign ep3_dout = rx_data_st;
> > assign ep4_dout = rx_data_st;
> > assign ep5_dout = rx_data_st;
> > assign ep6_dout = rx_data_st;
> > assign ep7_dout = rx_data_st;
> >
> >
> > Please clarify them.
> >
> > Reagards
> >
> > Dennis
> >
> >
>
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