EP2AGX125EF29I5N Datasheet, PDF (33/78 Pages) Altera Corporation – Device Datasheet for Arria II Devices

Chapter 1: Device Datasheet for Arria II Devices
Switching Characteristics
1–33
Figure 1–1 shows the lock time parameters in manual mode.
1 LTD = lock-to-data. LTR = lock-to-reference.
Figure 1–1. 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
Figure 1–2 shows the lock time parameters in automatic mode.
Figure 1–2. Lock Time Parameters for Automatic Mode
CDR status
LTR
LTD
r x_freqlocked
r x_dataout
Invalid data
Valid data
Data lock time from rx_freqlocked
July 2012 Altera Corporation
Arria II Device Handbook Volume 3: Device Datasheet and Addendum