Re: [usb] question in usb function core

[Rudolf Usselmann <rudi@asics.ws>]

Sorry, the USB function doc isn't very accurate. It's intended
to give a broad and basic overview of the operations only.
You should use the USB 2.x specification and/or the UTMI
specification for actual operation information.

rudi

On Friday 01 March 2002 10:51 am, you wrote:
> hi everybody
>
> "the assertion of se0 for more than 2.5us is interpreted as a reset by
> device operating in low_speed or full_speed "in the page 40 of
> 2_0_Xcvr_Macrocell_1_05.pdf
> is conflicted with "if idle asserted for >2.5us but <3.0 ms& FS mode,then
> enter RESET"in the page 22 of USB FUNCTION CORE.
> i think , se0  isnt  same with  idle in FS mode.
>
> in programm USB IP FUNCTION
> in module UTMI_IF
>
> NORMAL:
> begin
>   if (!mode_hs &T1_gt_2_5_us &T1_st_3_0_ms& !idle_long)
>   begin
>       me_cnt_clr=1'b1;
>       next_state=RESET;
>     end
> the !idle_long in the NORMAL isnt same with in the page 22 of USB
> FUNCTION CORE
>
> bestregard
>
> chmhero


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