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Honored Contributor

12 years ago

Intermittent PCIE LTSSM stuck at Detect Quiet

Hi I had an intermittent issue during power-up or reset. Sometimes it works and the ltssm state is at L0. sometimes it is not working and the ltssm state is stuck at Detect.quiet. Anyone e...

Altera_Forum

Honored Contributor

11 years ago

How is test_in set, please ensure that Table 4-24 is followed:

http://www.altera.com/literature/ug/ug_c5_pcie_avst.pdf#page=88

test_in[0] = 0;

test_in[4:1] = 4'b0100;

test_in[6:5] = 2'b00;

test_in[31:7] = 25'h1;

If on hardware ensure that the correct AC caps are fitted to the links.

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Intermittent PCIE LTSSM stuck at Detect Quiet

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