what is the function of "locked" in DCM component?

[lupineye]

Hi!
I'm trying to instantiate the DCM into my code.
However, I don't know the function of some ports of it.

can anyone tell me what "Locked, PSDONE, PSCLK, DSSEN, PSINCDEC, PSEN,
and status[7:0]?

And what is the pro of using DCM if I use only one clk for my design?

Thanks in advance!

 

[khaila]

Re: what is the function of "locked" in DCM compon

Hi!
I'm trying to instantiate the DCM into my code.
However, I don't know the function of some ports of it.

can anyone tell me what "Locked, PSDONE, PSCLK, DSSEN, PSINCDEC, PSEN,
and status[7:0]?

And what is the pro of using DCM if I use only one clk for my design?

Thanks in advance!

LOCKED goes high when the DCM is already produced the desired CLK_OUT. You shall use it with the input reset (ORed) in order to generate a global reset, or to drived any LED in order to get an indication if the DCM is locked.

If you are using only one clock so it is prefered to routed it through any DCM with N/M=1 so you can buffer the CLK.