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EP4SGX180DF29I3N Datasheet, PDF (41/82 Pages) Altera Corporation – Stratix IV Device Handbook Volume 4: Device Datasheet and Addendum | |||
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Chapter 1: DC and Switching Characteristics for Stratix IV Devices
Switching Characteristics
1â33
Figure 1â2 shows the lock time parameters in manual mode.
1 LTD = Lock-To-Data; LTR = Lock-To-Reference
Figure 1â2. 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 1â3 shows the lock time parameters in automatic mode.
Figure 1â3. Lock Time Parameters for Automatic Mode
CDR status
LTR
LTD
r x_freqlocked
r x_dataout
Invalid data
Valid data
t LTD_Auto
January 2014 Altera Corporation
Stratix IV Device Handbook
Volume 4: Device Datasheet and Addendum
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