Hi all
How are you? I hope good in these days…
I’m Shimon form RAD and we are encountering a problem with TI retimer p/n DS100DF410SQ/NOPB in our product.
We have constructed the following testing setup : (lines inside Startix chip represent the data flow)
After the data flow for a time, we start to have CRC errors. The 1G generators generate real Ethernet packets (not PRBS.).
I have some question about retime in 1G operation :
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What is the recommended initialization of the retimer for 1G operation. (please state values for all applicable registers)
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Regarding CTLE in adaptation mode - When retimer set to 1G, the divider setting to 8 (is >2), then a fixed EQ setting from register 0x3a is used.
Always , the default read from register 0x3 the value 0xa5 (default value of register 0x3a).
Register 0x6F[7] is low (indicating not in adaptive mode) and we can’t change it to perform EQ adaptation. What is the reason ??? does RETIMER can insert CTLE adaptation mode and how it can be done?
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Please advise what values of CTLE need used for 1G operation .
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Please elaborate on adaptation mode in related to 1G operation, we failed to find documentation in related to this topic.
Do you knowing to errata for 1G mode?