Other Parts Discussed in Thread: TMS320DM647
For REFCLKP/N clock rate the possible suggested is either 50MHz or 62.5MHz or 125MHz, and the corresponding Line Rate is 625Mbps or 1250Mbps.
TMS320DM647/DM648 DSP 3 Port Switch Ethernet Subsystem User's Guide (Rev. B)
http://www.ti.com/lit/ug/spruf57b/spruf57b.pdf
1.4 Clocks (Page 19)
Does the 50 ps pk-pk apply regardless of which reference clock rate is used?
If not, what is the jitter requirement for each reference clock rate?
Does the 50 ps pk-pk apply to the 625Mbps line rate?
If not, what is the jitter requirement for the 625Mbps line rate?
Best regards,
Daisuke