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In the last section of the handbook(all the timing numbers) there should be DPA specs.
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There are specs in Chapter 5, but they don't answer my questions.
For example, could long run of 10-bit "comma" patterns generated by one of the popular 8b/10b alphabets serve as DPA training sequence when deserialization factor=8 rather than 10? Chapter 5 gives no answer. To the contrary, the spec tables in Chapter 5 introduce yet another concept that I don't understand (and that handbook does not explain) - DPA run length.
If there is no good answer to my questions above, may be, somebody here could answer a related question.
What happens when DPA is presented with sequence of bits that is guaranteed to have certain density of transitions, for example, >10%, but is totally aperiodic? Does DPA do nothing at all in this case or does it continue to track after timing changes, just less efficiently than with "legal" training sequence?
Honored Contributor
