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Chapter 1: Cyclone IV Device Datasheet
1–21
Switching Characteristics
December 2016
Altera Corporation
shows the lock time parameters in manual mode.
1
LTD = lock-to-data. LTR = lock-to-reference.
shows the lock time parameters in automatic mode.
Figure 1–2. Lock Time Parameters for Manual Mode
rx _ analogreset
rx _ digitalreset
Reset Signals
Output Status Signals
rx _ locktorefclk
2
3
4
CDR Control Signals
rx _ locktodata
3
busy
1
Two parallel clock cycles
LTD_Manual
(2)
t
LTR_LTD_Manual
(1)
t
Figure 1–3. Lock Time Parameters for Automatic Mode
Reset Signals
rx _ analogreset
2
Output Status Signals
rx _ freqlocked
3
rx _ digitalreset
4
busy
1
Two parallel clock cycles
LTD_Auto
(1)
t
Summary of Contents for Cyclone IV
Page 10: ...x Chapter Revision Dates Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Page 14: ...I 2 Section I Device Core Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Page 274: ...vi Contents Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Page 440: ...iv Contents Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
Page 442: ...vi Chapter Revision Dates Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
Page 446: ......