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Altera PLL 12.0 or 12.1 with Cyclone V

Altera_Forum
Honored Contributor II
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Hi, my name is Jean and I use Cyclone V for my design. 

 

I use a Altera PLL (version 12.1) to have a 100MHz clock from 10MHz base clock (Reference Clock). 

My reference clock is a gclock and when I simulate this PLL (with ModelSim), no output work (No Lock and no output clock)!! 

 

I have made a reset (low, high and low) and I have any result !!!!!  

 

I have made the same thing with Cyclone IV and altpll and it work fine. 

 

Do you have any Idea ? 

It's Altera ModelSim or me :) ? 

 

Thank you 

 

The operation mode is Normal or direct, PLL Mode is Integer-N PLL. 

One output Clock at 100MHz 

Reference clock at 10MHz 

 

The result is (from ModelSIm, outclk_0 = the output of PLL):  

 

** Warning: (vsim-8684) No drivers exist on out port /tb_testalgo/b2v_inst/outclk_0, and its initial value is not used. 

** Warning: (vsim-8684) No drivers exist on out port /tb_testalgo/b2v_inst/locked, and its initial value is not used. 

 

Jean
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Altera_Forum
Honored Contributor II
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also, When I compile my test design, I have a warning: 

 

Warning (332056): PLL cross checking found inconsistent PLL clock settings: 

Warning (332056): Node: inst|testpll_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[0] was found missing 1 generated clock that corresponds to a base clock with a period of: 100.000 

Warning (332056): Node: inst|testpll_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[1] was found missing 1 generated clock that corresponds to a base clock with a period of: 100.000 

Warning (332056): Node: inst|testpll_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[2] was found missing 1 generated clock that corresponds to a base clock with a period of: 100.000 

Warning (332056): Node: inst|testpll_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[3] was found missing 1 generated clock that corresponds to a base clock with a period of: 100.000 

Warning (332056): Node: inst|testpll_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[4] was found missing 1 generated clock that corresponds to a base clock with a period of: 100.000 

Warning (332056): Node: inst|testpll_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[5] was found missing 1 generated clock that corresponds to a base clock with a period of: 100.000 

Warning (332056): Node: inst|testpll_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[6] was found missing 1 generated clock that corresponds to a base clock with a period of: 100.000 

Warning (332056): Node: inst|testpll_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[7] was found missing 1 generated clock that corresponds to a base clock with a period of: 100.000
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Altera_Forum
Honored Contributor II
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Other warning when I compile: 

 

10034 Output port "phout" at altera_pll.v (275) has no driver 

10034 Output port "cascade_out" at altera_pll.v (275) has no driver
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