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seanlj
Observer
Observer
5,140 Views
Registered: ‎03-05-2009

gtp about rxrecclk_dcm_locked

i use gpt v1.9  ip core base on st95t.  TILE0_PLLLKDET_OUT  and TILE0_RESETDONE0_I is 1 ;but i foud txoutclk_dcm0_locked_i 

 

rxrecclk_dcm1_locked_i   and rxrecclk_dcm2_locked_i  sometime  is sometime 0  and i do "rxrecclk_dcm0_i <= not  TILE0_PLLLKDET_OUT.

 

what can i do else? thanks

 

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kaitokid
Xilinx Employee
Xilinx Employee
5,125 Views
Registered: ‎08-02-2007

Is this problem seen on board or in simulation?

Please confirm if TXOUTCLK and RXRECCLK are stable and the DCM parameters are correct.

Is this design created by GTP Wizard? Did you change anything in the generated source codes?

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venkata
Moderator
Moderator
4,072 Views
Registered: ‎02-16-2010

I hope this problem is not related to GTP. This is might be problem with DCM.

 

Check VCCAUX power supply noise and the status signals of DCM.

 

 

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