Hi, support team
My customer has the questions as follow:
There is no record of SRIS support or SRnS support in LMK00338‘s datasheet.
Can't LMK00338's PCLe support SRIS and SRnS architecture?
Thanks so much.
Best regards,
Yuki
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Hi, support team
My customer has the questions as follow:
There is no record of SRIS support or SRnS support in LMK00338‘s datasheet.
Can't LMK00338's PCLe support SRIS and SRnS architecture?
Thanks so much.
Best regards,
Yuki
Hello Yuki,
LMK00338 is a simple buffer and will passthrough SSC. Therefore both SRIS and SRNS are supported.
regards,
Julian
Hello Julian,
Thank you for your kindly reply.
Please reconfirm whether SRIS and SRNS are supported in PCIe Gen5.
If they are supported, could you provide PCIe Gen5's Jitter measurements.
There is another question:
LMK00338 has the Glitch free function,
Is it right that only REFout pin has this function, while other pins(CLKoutA0、CLKoutA1、CLKoutB0、CLKoutB1) do not have?
If only REFout pin has this function, what is its purpose?
Could you provide application example or method of REFout circuit?
Best regards,
Yuki
Hi Yuki,
the PCIe gen5 performance is in the datasheet:
Correct, only REFout has the sync function.
Regards,
Julian
Hello Julian,
Thank you so much for your reply.
Are there any application examples or references of REFout circuit?
Best regards,
Yuki
Hello Julian,
And about PCIe Gen5's Jitter measurements,
My cutomer thinks that the jitter in datasheet is common clock architecture's jitter data.
SRISarchitecture's jitter is different from common clock architecture's jitter.
Are there any SRISarchitecture's jitter data?
Best regards,
Yuki
Hello Yuki,
REFout is LVCMOS. So a typical LVCMOS circuit with a source termination resistor is good. However the LMK0338 REFout output impedance is nominally 50 ohms, so this source resistance, Rs can be 0 ohm.
73,
Timothy