TOC-4
Cyclone V Device Handbook Volume 1: Device Interfaces and Integration
Types of Clock Networks................................................................................................................4-3
Clock Sources Per Quadrant..........................................................................................................4-7
Types of Clock Regions...................................................................................................................4-8
Clock Network Sources...................................................................................................................4-9
Clock Output Connections...........................................................................................................4-11
Clock Control Block......................................................................................................................4-11
Clock Power Down........................................................................................................................4-14
Clock Enable Signals......................................................................................................................4-14
Cyclone V PLLs..........................................................................................................................................4-16
PLL Migration Guidelines ...........................................................................................................4-22
Fractional PLL Architecture.........................................................................................................4-22
PLL Cascading................................................................................................................................4-23
PLL External Clock I/O Pins........................................................................................................4-23
PLL Control Signals.......................................................................................................................4-24
Clock Feedback Modes..................................................................................................................4-25
Programmable Phase Shift............................................................................................................4-32
Programmable Duty Cycle...........................................................................................................4-32
Clock Switchover...........................................................................................................................4-32
Document Revision History.....................................................................................................................4-38
PLLs and Clocking.........................................................................................................................5-12
Altera Corporation
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