Tool/software:
Could you please tell me about the DS250DF230?
I would like to knowfollowings,
(1) the time it takes for the PLL to lock
(2) the time it takes for the PLL to unlock
in both "Lock Mode" and "Non-Lock Mode".
And does this change depending on the transmission rate or register settings?
Thank you for your support.
Best Regards,
Takumi
Hi Takumi-san,
1. In lock mode (CDR mode), the CDR lock time is dependent on the adaptation mode used. For adapt mode 2, we expect <100ms.
I don't have measurements on the unlock time, but I would expect it to be very quick, <1ms.
2. In non-lock mode (I'm assuming you mean CDR bypass mode), there is no lock time.
The CDR lock time will be most significantly impacted by the CDR divider setting. For example, I expect the lock time for 10GbE (10.3125 Gbps) to be longer than 25 GbE due to increased adaptation time.
Thanks,
Drew
