[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [usb] Please help with a USB DPLL



On Sun, 2003-05-18 at 02:28, mdennis97@hotmail.com wrote:
> hi, Mr. rudi:
> 
> I am not so clear about the following code in usb_rx_phy.Maybe there 
> are some special functions that I didn't grasp:
> 
> // Compensate for sync registers at the input - allign full speed
> // clock enable to be in the middle between two bit changes ...
> always @(posedge clk)
> 	fs_ce_r1 <= #1 fs_ce_d;
> 
> always @(posedge clk)
> 	fs_ce_r2 <= #1 fs_ce_r1;
> 
> always @(posedge clk)
> 	fs_ce_r3 <= #1 fs_ce_r2;
> 
> always @(posedge clk)
> 	fs_ce <= #1 fs_ce_r3;
> 
> Can I replace them with "assign fs_ce = fs_ce_d;"? If not, why?
> 
> 
> Regards
> 
> Dennis

Compensate for sync registers at the input - allign full speed
clock enable to be in the middle between two bit changes ...

-- 
rudi               
-------------------------------------------------------
www.asics.ws  -- Solutions for your ASIC/FPGA needs ---
---------------- FPGAs * Full Custom ICs * IP Cores ---
* * * FREE IP Cores  --> http://www.asics.ws/ <-- * * *



--
To unsubscribe from usb mailing list please visit http://www.opencores.org/mailinglists.shtml