FreeLists / si-list / [SI-LIST] LVDS & TMDS

["Ched-Chang Chai" <ched_chang@xxxxxxxxxxx>]

Dear all,

I have a few questions about LVDS and TMDS:

LVDS:
(1) The clock pair frequency is different from the data pair frequency. What 
is the skew requirements between clock pair and data pairs?
(2) How should I measure the delay: Is it from the crossing point of the 
driver differential pair to the crossing point of the receiver differential 
pair?

TMDS:
(1) From the VESA plug and display standard, it states that the effective 
data transmission is 10 times the clock frequency and the skew among the 
data pairs is allowed within one bit time (one tenth of one clock cycle 
period). Is there a skew requirement between the clock pair and data pairs?
(2) How should I measure the delay: Is it from the crossing point of the 
driver differential pair to the crossing point of the receiver differential 
pair?

Thank you very much in advance.
--
Regards,
Chai

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