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EP2S130F1020I4 Datasheet, PDF (253/768 Pages) List of Unclassifed Manufacturers – Stratix II Device Handbook, Volume 1 | |||
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Contents
Contents
Same-Port Read-During-Write Mode .......................................................................................... 2â33
Mixed-Port Read-During-Write Mode ........................................................................................ 2â34
Conclusion ............................................................................................................................................ 2â35
Referenced Documents ....................................................................................................................... 2â36
Document Revision History ............................................................................................................... 2â36
Chapter 3. External Memory Interfaces in Stratix II and Stratix II GX Devices
Introduction ............................................................................................................................................ 3â1
External Memory Standards ................................................................................................................ 3â4
DDR and DDR2 SDRAM ................................................................................................................. 3â4
RLDRAM II ....................................................................................................................................... 3â8
QDRII SRAM ................................................................................................................................... 3â10
Stratix II and Stratix II GX DDR Memory Support Overview ...................................................... 3â13
DDR Memory Interface Pins ......................................................................................................... 3â14
DQS Phase-Shift Circuitry ............................................................................................................ 3â21
DQS Logic Block ............................................................................................................................. 3â28
DDR Registers ................................................................................................................................. 3â31
PLL ................................................................................................................................................... 3â38
Enhancements In Stratix II and Stratix II GX Devices .................................................................... 3â38
Conclusion ............................................................................................................................................ 3â38
Referenced Documents ....................................................................................................................... 3â39
Document Revision History ............................................................................................................... 3â39
Section III. I/O Standards
Revision History .................................................................................................................... Section IIIâ1
Chapter 4. Selectable I/O Standards in Stratix II and Stratix II GX Devices
Introduction ............................................................................................................................................ 4â1
Stratix II and Stratix II GX I/O Features ............................................................................................ 4â1
Stratix II and Stratix II GX I/O Standards Support .......................................................................... 4â2
Single-Ended I/O Standards .......................................................................................................... 4â3
Differential I/O Standards ............................................................................................................ 4â10
Stratix II and Stratix II GX External Memory Interface .................................................................. 4â19
Stratix II and Stratix II GX I/O Banks ............................................................................................... 4â20
Programmable I/O Standards ...................................................................................................... 4â22
On-Chip Termination .......................................................................................................................... 4â27
On-Chip Series Termination without Calibration ..................................................................... 4â28
On-Chip Series Termination with Calibration ........................................................................... 4â30
On-Chip Parallel Termination with Calibration ........................................................................ 4â31
Design Considerations ........................................................................................................................ 4â33
I/O Termination ............................................................................................................................. 4â33
I/O Banks Restrictions .................................................................................................................. 4â34
I/O Placement Guidelines ............................................................................................................ 4â36
DC Guidelines ................................................................................................................................. 4â39
Conclusion ............................................................................................................................................ 4â42
Altera Corporation
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