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发表于 2010-7-9 10:58:04
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CDR Type:
1. Based PLL CDR (SATA) -------- Continue mode, long long lock time, low jitter for recoved clock
2. Based PI CDR (SATA, USB3) ---- Contimue mode, long lock time, more jitter for recoved clock
3. Over Sampling CDR (USB2, 1.25Gb EPON, 2,5Gb EPON at 90nm) ---- Burst mode, short short lock time, mult-phase. Large jitter for recover clock.
4. Burst CDR (10G EPON) ----- Burst mode, short lock time, single phase. large jitter for recover clock.
5. Based DLL CDR (LVDS, HDMI) ----- SYNC clock for Tx.
One type for one application. Study more no bad. To study how to choose the best type for your design and application.
1# mistdark |
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