LMH0366 Signal detect question

Toshi

Hi, TI. I have a question of Signal detect function, If the input signal was changed from signal A to Signal B( A and B are same rate and same phase but different movi, I guess the device will not into unlock state ), Does the "Signal detect function" can detect the change of the signal(The bit of SIG_DET cnaged as "1 -> 0 -> 1") ? or cannot detect the change(The bit of SIG_DET always "1") ?

over 9 years ago

0 Nasser Mohammadi over 9 years ago

TI__Guru* 93670 points

Greetings Toshi-San,

When there is a change from signal A to signal B and there is no frequency or phase change or loss of signal then the device stays in lock. In this case, sig_det stays asserted(for example no loss of signal).

If there is no signal for a period greater than about 50ns then there is loss of signal(for example sig_det is low).

Regards,,nasser

0 Toshi over 9 years ago in reply to Nasser Mohammadi

Expert 1780 points

Nasser-san,
Thank you very much. I see, the device works in phy layer.

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LMH0366 Signal detect question