Tool/software:
Could you please let me know max pattern length of DS9UB928 output OPEN LDI?
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Tool/software:
Could you please let me know max pattern length of DS9UB928 output OPEN LDI?
Hi Jin,
In reference to the DS90UB928 deserializer, are you asking about the maximum resolution that can be output on the OPEN LDI output, or are you referring to the maximum data rate that can be sent over the OPEN LDI lines?
Best,
Miguel
Hi Jin,
The important factor for the length of the Open LDI traces is that they're length matched to avoid inter and intra pair skew.
As long as this requirement is met under 60 ps between the OLDI traces, then there should not be any major issues with the maximum length.
Although there is not an official datasheet recommendation for the maximum length that the OLDI traces should meet, there are other factors to take into consideration regarding the impedance of the line, any external interference on the line (isolating the pairs), and connectors that are used.
It is best to keep the lengths minimized for impedance reasons but ensure that the traces are as close to the same length as possible to avoid skew.
Best,
Miguel