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EP2C20AU256I8ES

Cyclone II Device Handbook, Volume 1

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Contents

Conclusion .......................................................................................................................................... 10–36

References ........................................................................................................................................... 10–37

Referenced Documents ..................................................................................................................... 10–38

Document Revision History ............................................................................................................. 10–38

Chapter 11. High-Speed Differential Interfaces in Cyclone II Devices

Introduction .......................................................................................................................................... 11–1

Cyclone II High-Speed I/O Banks .................................................................................................... 11–1

Cyclone II High-Speed I/O Interface ............................................................................................... 11–3

I/O Standards Support ....................................................................................................................... 11–4

LVDS Standard Support in Cyclone II Devices ......................................................................... 11–4

RSDS I/O Standard Support in Cyclone II Devices .................................................................. 11–7

mini-LVDS Standard Support in Cyclone II Devices ................................................................ 11–9

LVPECL Support in Cyclone II .................................................................................................. 11–11

Differential SSTL Support in Cyclone II Devices ..................................................................... 11–12

Differential HSTL Support in Cyclone II Devices ................................................................... 11–13

High-Speed I/O Timing in Cyclone II Devices ............................................................................. 11–14

Design Guidelines ............................................................................................................................. 11–16

Differential Pad Placement Guidelines ..................................................................................... 11–16

Board Design Considerations ..................................................................................................... 11–16

Conclusion .......................................................................................................................................... 11–17

Section V. DSP

Revision History .................................................................................................................................. 11–1

Chapter 12. Embedded Multipliers in Cyclone II Devices

Introduction .......................................................................................................................................... 12–1

Embedded Multiplier Block Overview ............................................................................................ 12–2

Architecture .......................................................................................................................................... 12–4

Input Registers ................................................................................................................................ 12–4

Multiplier Stage .............................................................................................................................. 12–5

Output Registers ............................................................................................................................. 12–6

Operational Modes .............................................................................................................................. 12–6

18-Bit Multipliers ............................................................................................................................ 12–7

9-Bit Multipliers .............................................................................................................................. 12–7

Software Support ................................................................................................................................. 12–9

Conclusion ............................................................................................................................................ 12–9

Section VI. Configuration & Test

Revision History .................................................................................................................................. 12–1

Chapter 13. Configuring Cyclone II Devices

Introduction .......................................................................................................................................... 13–1

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Cyclone II Device Handbook, Volume 1

Altera Corporation

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