EP4SE230F29I4N Datasheet, PDF (41/82 Pages) Altera Corporation – Stratix IV Device Handbook

Chapter 1: DC and Switching Characteristics for Stratix IV Devices
Switching Characteristics
1–33
Figure 1–2 shows the lock time parameters in manual mode.
1 LTD = Lock-To-Data; LTR = Lock-To-Reference
Figure 1–2. 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
t _LTR
t _{LTD_Manual}
t _{LTR_LTD_Manual}
Figure 1–3 shows the lock time parameters in automatic mode.
Figure 1–3. Lock Time Parameters for Automatic Mode
CDR status
LTR
LTD
r x_freqlocked
r x_dataout
Invalid data
Valid data
t _{LTD_Auto}
March 2014 Altera Corporation
Stratix IV Device Handbook
Volume 4: Device Datasheet and Addendum