p.1205 of mpc8640rm.pdf describe the LTSSM of PCIE.What the detail of LTSSM,for example detect active(0) and detect active(1)?

[wangshuwang]

p.1205 of mpc8640rm.pdf describe the LTSSM of PCIE.What the detail of LTSSM,for example detect active(0) and detect active(1)?

Thank you!

[ufedor]

If LTSSM polling pattern never exceeds 0x03:

-> The PCIe transmitter can’t detect the presence of the remote link partner’s receiver.

->> Check the AC coupling capacitor value (100nF), continuity of all components related to the link

[wangshuwang]

What is the difference of detect active(0) and detect active(1)?