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Summary of Automatic Clock Switchover Feature

The following table summarizes automatic clock switchover support in the supported device families. Also

supports automatic clock switchover feature with manual override control.

Table 7: Automatic Clock Switchover Feature Support

Cyclone Series PLLFast PLLEnhanced PLLLeft_RightTop_BottomDevice Family

—NoYes——Arria GX

———Yes—Arria II GX

———YesYesStratix IV

———YesYesStratix III

—NoYes——Stratix II

—NoYes——Stratix II GX

—NoYes——Stratix

—NoYes——Stratix GX

Yes————Cyclone IV

Yes————Cyclone III

No————Cyclone II

No————Cyclone

The following table summarizes the manual clock switchover support in the supported device families.

Table 8: Manual Clock Switchover Feature Support

Cyclone Series PLLFast PLLEnhanced PLLLeft_RightTop_BottomDevice

—YesYes——Arria GX

———Yes—Arria II GX

———YesYesStratix IV

———YesYesStratix III

—YesYes——Stratix II

—YesYes——Stratix II GX

—NoYes——Stratix

—NoYes——Stratix GX

Yes————Cyclone IV

ALTPLL (Phase-Locked Loop) IP Core User Guide

Altera Corporation

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Summary of Automatic Clock Switchover Feature

2014.08.18

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Altera ALTPLL (Phase-Locked Loop) IP Core Bedienungsanleitung Seite 16