I have two questions to consult, please help confirm
1. What is the rate range supported by DS250DF410 to send PRBS and PRBS check?
2. Do these two functions require additional clock input?
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I have two questions to consult, please help confirm
1. What is the rate range supported by DS250DF410 to send PRBS and PRBS check?
2. Do these two functions require additional clock input?
Cordially,
Rodrigo Natal
HSSC Applications Engineer
According to the reply,
the condition for the DS250DF410 generate PRBS Pattern, is that there is a reference clock at the high speed input?
What about the Pattern Checker,also need a reference clock input at the high speed?
Let me clarify further.
The requirement for PRBS generation is that there be some input data present that the retimer CDR can achieve CDR lock with. It can be either:
The PRBS checker may be enabled even if there is no input data present. obviously if there is no input data the error count will immediately max out and retimer will indicate no pattern detected.
Cordially,
Rodrigo Natal
HSSC Applications Engineer
What about the Pattern Checker,also need a reference clock input at the high speed?
Could you please answer this question? Thank you!
The TI retimer Rx channel simply needs input PRBS data to be able to perform its PRBS checker function. Note that the TI retimer uses a simple 25MHz input calibration clock.
Cordially,
Rodrigo Natal
HSSC Applications Engineer