EP2SGX60CF780C4N Datasheet, PDF (180/316 Pages) Altera Corporation – Support for numerous single-ended and differential I/O standards

Operating Conditions
Figure 4–1 shows the lock time parameters in manual mode, Figure 4–2
shows the lock time parameters in automatic mode.
1 LTD = Lock to data
LTR = Lock to reference clock
Figure 4–1. Lock Time Parameters for Manual Mode
r x_analogreset
CDR status
LTR
LTD
r x_pll_locked
r x_locktodata
r x_dataout
Invalid Data
Valid data
CDR LTR Time
LTD lock time
CDR Minimum T1b
4–10
Stratix II GX Device Handbook, Volume 1
Altera Corporation
June 2009